Merge branch 'master' of github.com-GregWilson:GregWilson/react-native-apple-healthkit

README.md

@@ -3,9 +3,13 @@ A React Native bridge module for interacting with [Apple HealthKit] data.
 
 ![Alt text](https://devimages.apple.com.edgekey.net/assets/elements/icons/healthkit/healthkit-64x64.png "Apple HealthKit")
 
+#### Notice
+*This package is undergoing rapid development and should be considered unstable for the time being. 
+<strong>Use at your own risk</strong>*
+
 #### Table of Contents
   * [Getting Started](#getting-started)
-    * [Installation](#installation-xcode)
+    * [Installation](#installation)
     * [Usage](#usage)
   * [Documentation](#documentation)
     * [Permissions](#permissions)
@@ -13,6 +17,7 @@ A React Native bridge module for interacting with [Apple HealthKit] data.
       * [isAvailable](#isavailable)
       * [initHealthKit](#inithealthkit)
       * [getStepCountForToday](#getstepcountfortoday)
+      * [getStepCountForDay](#getstepcountforday)
       * [getLatestWeight](#getlatestweight)
       * [saveWeight](#saveweight)
       * [getLatestHeight](#getlatestheight)
@@ -169,7 +174,6 @@ AppleHealthKit.initHealthKit(healthKitOptions: object, (err: string, res: object
 
 ___
 
-
 #### **`getStepCountForToday`**
 get the the aggregated total steps for the current day starting and ending at midnight
 ```javascript
@@ -183,6 +187,23 @@ AppleHealthKit.getStepCountForToday(null, (err: Object, steps: number) => {
 
 ___
 
+#### **`getStepCountForDay`**
+get the the aggregated total steps for the day provided as `date` in options object. the `date` field expects an ISO date string as its value
+```javascript
+let d = new Date(2016,5,27);
+let options = {
+    date: d.toISOString()
+};
+AppleHealthKit.getStepCountForDay(options, (err, steps) => {
+    if(this._handleHealthKitError(err, 'getStepCountForDay')){
+        return;
+    }
+    // steps is the step count for day 'd'
+});
+```
+
+___
+
 #### **`getLatestWeight`**
 get the most recent weight value
 ```javascript