added unit types (bpm, celsius, fahrenheit) and updated constants

RCTAppleHealthKit/RCTAppleHealthKit+Utils.m

@@ -225,6 +225,18 @@
     if([unitString isEqualToString:@"percent"]){
         theUnit = [HKUnit percentUnit];
     }
+    if([unitString isEqualToString:@"bpm"]){
+        HKUnit *count = [HKUnit countUnit];
+        HKUnit *minute = [HKUnit minuteUnit];
+
+        theUnit = [count unitedDividedByUnit:minute];
+    }
+    if([unitString isEqualToString:@"fahrenheit"]){
+        theUnit = [HKUnit degreeFahrenheitUnit];
+    }
+    if([unitString isEqualToString:@"celsius"]){
+        theUnit = [HKUnit degreeCelsiusUnit];
+    }
 
     if(theUnit == nil){
         theUnit = defaultValue;

constants.js

@@ -42,7 +42,10 @@ const UNITS = {
 	joule: 'joule',
 	calorie: 'calorie',
 	count: 'count',
-	percent: 'percent'
+	percent: 'percent',
+	bpm: 'bpm',
+	fahrenheit: 'fahrenheit',
+	celsius: 'celsius',
 };