getLatestWeight updated

README.md

@@ -94,26 +94,31 @@ When the module has been successfully initialized you can read and write HealthK
 var AppleHealthKit = require('rn-apple-healthkit');
 var _ = require('lodash');
 
-...
 
-AppleHealthKit.getLatestWeight(null, (err: Object, weight: Object) => {
+AppleHealthKit.initHealthKit(null: Object, (err: string, res: Object) => {
+
+  ...
+
+  AppleHealthKit.getLatestWeight(null, (err: Object, weight: Object) => {
       if(err){
           console.log("error getting current weight: ", err);
           return;
       }
       // use weight.value ...
-});
+  });
 
-...
+  ...
 
-let options = {value: 200};
-AppleHealthKit.saveWeight(options: Object, (err: Object, res: Object) => {
+  let options = {value: 200};
+  AppleHealthKit.saveWeight(options: Object, (err: Object, res: Object) => {
       if(err){
           console.log("error saving weight to healthkit: ", err);
           return;
       }
       // weight successfully saved
-});
+  });
+
+}
 
 
 ```