diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m b/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m
index d8dd80453ef8cfc34575b38e57305fdec70fb996..a4ca6eb7465922dda46885fb2d05d26617ae3588 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m
@@ -140,7 +140,7 @@
 
                 for (HKCategorySample *sample in results) {
 
-                    HKCategoryType *catType = sample.categoryType;
+                    // HKCategoryType *catType = sample.categoryType;
                     NSInteger val = sample.value;
 
                     // HKQuantity *quantity = sample.quantity;
@@ -149,9 +149,22 @@
                     NSString *startDateString = [RCTAppleHealthKit buildISO8601StringFromDate:sample.startDate];
                     NSString *endDateString = [RCTAppleHealthKit buildISO8601StringFromDate:sample.endDate];
 
+                    NSString *valueString;
+
+                    switch (val) {
+                      case HKCategoryValueSleepAnalysisInBed:
+                        valueString = @"INBED";
+                      break;
+                      case HKCategoryValueSleepAnalysisAsleep:
+                        valueString = @"ASLEEP";
+                      break;
+                     default:
+                        valueString = @"UNKNOWN";
+                     break;
+                  }
+
                     NSDictionary *elem = @{
-                            @"value" : @(( (float) val )),
-                           @"catType" : catType.identifier,
+                            @"value" : valueString,
                             @"startDate" : startDateString,
                             @"endDate" : endDateString,
                     };
diff --git a/README.md b/README.md
index e4ae959ce14b76bcb7c755c394d682d008083f98..4fd645967be464deb179c8f30618c2a5fa7e3ce4 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ A React Native bridge module for interacting with [Apple HealthKit] data.
       * [getBloodPressureSamples](#getbloodpressuresamples)
       * [getRespiratoryRateSamples](#getrespiratoryratesamples)
       * [getBloodGlucoseSamples](#getbloodglucosesamples)
+      * [getSleepSamples](#getsleepsamples)
   * [Examples](#examples)
 
 
@@ -151,7 +152,10 @@ The available HealthKit permissions to use with `initHealthKit`
 | BloodPressureSystolic  | [HKQuantityTypeIdentifierBloodPressureSystolic](https://developer.apple.com/reference/healthkit/hkquantitytypeidentifierbloodpressuresystolic?language=objc)   | ✓    |       |
 | BloodPressureDiastolic | [HKQuantityTypeIdentifierBloodPressureDiastolic](https://developer.apple.com/reference/healthkit/hkquantitytypeidentifierbloodpressurediastolic?language=objc) | ✓    |       |
 | RespiratoryRate        | [HKQuantityTypeIdentifierRespiratoryRate](https://developer.apple.com/reference/healthkit/hkquantitytypeidentifierrespiratoryrate?language=objc)               | ✓    |       |
-| BloodGlucose           | [HKQuantityTypeIdentifierBloodGlucose](https://developer.apple.com/reference/healthkit/hkquantitytypeidentifierbloodglucose?language=objc)                     | ✓    |       |
+| BloodGlucose           | [HKQuantityTypeIdentifierBloodGlucose](https://developer.apple.com/reference/healthkit/hkquantitytypeidentifierbloodglucose?language=objc)                     | ✓    |       
+|
+| SleepAnalysis          | [HKCategoryTypeIdentifierSleepAnalysis](https://developer.apple.com/reference/healthkit/hkcategorytypeidentifiersleepanalysis?language=objc)                   | ✓    |     
+|
 
 
 These permissions are exported as constants of the `react-native-apple-healthkit` module.
@@ -873,6 +877,40 @@ AppleHealthKit.getBloodGlucoseSamples(options, (err: Object, samples: Array<Obje
 ```
 
 
+___
+
+#### **`getSleepSamples`**
+query for sleep samples.
+
+each sleep sample represents a period of time with a startDate and an endDate.
+the sample's value will be either `INBED` or `ASLEEP`. these values should overlap,
+meaning that two samples represent a single nights sleep activity. see
+[HealthKit SleepAnalysis] reference documentation
+
+the options object is used to setup a query to retrieve relevant samples.
+the options must contain `startDate` and may also optionally include `endDate`
+and `limit` options
+```javascript
+let options = {
+    startDate: (new Date(2016,10,1)).toISOString(),		// required
+	  endDate: (new Date()).toISOString(),				// optional; default now
+    limit:10,											// optional; default no limit
+};
+```
+
+the callback function will be called with a `samples` array containing objects
+with *value*, *startDate*, and *endDate* fields
+
+*example usage*
+```javascript
+AppleHealthKit.getSleepSamples(options, (err: Object, samples: Array<Object>) => {
+	if(this._handleHealthKitError(err, 'getSleepSamples')){
+		return;
+	}
+	// use samples ...
+});
+```
+
 
 
 ## Examples
@@ -892,3 +930,4 @@ AppleHealthKit.getBloodGlucoseSamples(options, (err: Object, samples: Array<Obje
 
 [Apple HealthKit]: https://developer.apple.com/healthkit/
 [react-native-apple-healthkit]: https://www.npmjs.com/package/react-native-apple-healthkit
+[HealthKit SleepAnalysis]: https://developer.apple.com/reference/healthkit/hkcategoryvaluesleepanalysis?language=objc
diff --git a/examples/StepsDemo/ios/StepsDemo.xcodeproj/project.pbxproj b/examples/StepsDemo/ios/StepsDemo.xcodeproj/project.pbxproj
index 95529eb6d7d558e93277f452f484d13ef7764b15..e0009b6ce17e3305140e3251cbfdc61655477748 100644
--- a/examples/StepsDemo/ios/StepsDemo.xcodeproj/project.pbxproj
+++ b/examples/StepsDemo/ios/StepsDemo.xcodeproj/project.pbxproj
@@ -22,6 +22,7 @@
 		13B07FC11A68108700A75B9A /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 13B07FB71A68108700A75B9A /* main.m */; };
 		140ED2AC1D01E1AD002B40FF /* libReact.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 146834041AC3E56700842450 /* libReact.a */; };
 		146834051AC3E58100842450 /* libReact.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 146834041AC3E56700842450 /* libReact.a */; };
+		37837E961DCFE49D000201A0 /* libRCTAppleHealthKit.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 37837E951DCFE493000201A0 /* libRCTAppleHealthKit.a */; };
 		378616B61D257B040027C300 /* HealthKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 378616B51D257B040027C300 /* HealthKit.framework */; };
 		832341BD1AAA6AB300B99B32 /* libRCTText.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 832341B51AAA6A8300B99B32 /* libRCTText.a */; };
 /* End PBXBuildFile section */
@@ -90,6 +91,13 @@
 			remoteGlobalIDString = 83CBBA2E1A601D0E00E9B192;
 			remoteInfo = React;
 		};
+		37837E941DCFE493000201A0 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 37837E901DCFE493000201A0 /* RCTAppleHealthKit.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = 3774C88D1D2092F20000B3F3;
+			remoteInfo = RCTAppleHealthKit;
+		};
 		78C398B81ACF4ADC00677621 /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 78C398B01ACF4ADC00677621 /* RCTLinking.xcodeproj */;
@@ -126,6 +134,7 @@
 		13B07FB61A68108700A75B9A /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = Info.plist; path = StepsDemo/Info.plist; sourceTree = "<group>"; };
 		13B07FB71A68108700A75B9A /* main.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = main.m; path = StepsDemo/main.m; sourceTree = "<group>"; };
 		146833FF1AC3E56700842450 /* React.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = React.xcodeproj; path = "../node_modules/react-native/React/React.xcodeproj"; sourceTree = "<group>"; };
+		37837E901DCFE493000201A0 /* RCTAppleHealthKit.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = RCTAppleHealthKit.xcodeproj; path = "../node_modules/react-native-apple-healthkit/RCTAppleHealthKit.xcodeproj"; sourceTree = "<group>"; };
 		378616B51D257B040027C300 /* HealthKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = HealthKit.framework; path = System/Library/Frameworks/HealthKit.framework; sourceTree = SDKROOT; };
 		378616B71D257B040027C300 /* StepsDemo.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.xml; name = StepsDemo.entitlements; path = StepsDemo/StepsDemo.entitlements; sourceTree = "<group>"; };
 		78C398B01ACF4ADC00677621 /* RCTLinking.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = RCTLinking.xcodeproj; path = "../node_modules/react-native/Libraries/LinkingIOS/RCTLinking.xcodeproj"; sourceTree = "<group>"; };
@@ -145,6 +154,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				37837E961DCFE49D000201A0 /* libRCTAppleHealthKit.a in Frameworks */,
 				139FDEF61B0652A700C62182 /* libRCTWebSocket.a in Frameworks */,
 				146834051AC3E58100842450 /* libReact.a in Frameworks */,
 				00C302E51ABCBA2D00DB3ED1 /* libRCTActionSheet.a in Frameworks */,
@@ -258,6 +268,14 @@
 			name = Products;
 			sourceTree = "<group>";
 		};
+		37837E911DCFE493000201A0 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				37837E951DCFE493000201A0 /* libRCTAppleHealthKit.a */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
 		78C398B11ACF4ADC00677621 /* Products */ = {
 			isa = PBXGroup;
 			children = (
@@ -269,6 +287,7 @@
 		832341AE1AAA6A7D00B99B32 /* Libraries */ = {
 			isa = PBXGroup;
 			children = (
+				37837E901DCFE493000201A0 /* RCTAppleHealthKit.xcodeproj */,
 				146833FF1AC3E56700842450 /* React.xcodeproj */,
 				00C302A71ABCB8CE00DB3ED1 /* RCTActionSheet.xcodeproj */,
 				00C302B51ABCB90400DB3ED1 /* RCTGeolocation.xcodeproj */,
@@ -391,6 +410,10 @@
 					ProductGroup = 00C302A81ABCB8CE00DB3ED1 /* Products */;
 					ProjectRef = 00C302A71ABCB8CE00DB3ED1 /* RCTActionSheet.xcodeproj */;
 				},
+				{
+					ProductGroup = 37837E911DCFE493000201A0 /* Products */;
+					ProjectRef = 37837E901DCFE493000201A0 /* RCTAppleHealthKit.xcodeproj */;
+				},
 				{
 					ProductGroup = 00C302B61ABCB90400DB3ED1 /* Products */;
 					ProjectRef = 00C302B51ABCB90400DB3ED1 /* RCTGeolocation.xcodeproj */;
@@ -493,6 +516,13 @@
 			remoteRef = 146834031AC3E56700842450 /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
+		37837E951DCFE493000201A0 /* libRCTAppleHealthKit.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = libRCTAppleHealthKit.a;
+			remoteRef = 37837E941DCFE493000201A0 /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
 		78C398B91ACF4ADC00677621 /* libRCTLinking.a */ = {
 			isa = PBXReferenceProxy;
 			fileType = archive.ar;
diff --git a/examples/StepsDemo/package.json b/examples/StepsDemo/package.json
index f31686206dede6ddc0909c36b2156ac3b6dcce51..2b59238cde8cdd537c519b1a34b499bdd87e78f1 100644
--- a/examples/StepsDemo/package.json
+++ b/examples/StepsDemo/package.json
@@ -9,7 +9,6 @@
     "lodash": "^4.13.1",
     "react": "15.1.0",
     "react-mixin": "^2.0.2",
-    "react-native": "^0.28.0",
-    "react-native-apple-healthkit": "file:///Users/greg/Dev/experimental/RCTAppleHealthKit"
+    "react-native": "^0.28.0"
   }
 }