Readme update and first commit on mirror

package.json

 {
   "name": "rn-apple-healthkit",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "description": "A React Native package for interacting with Apple HealthKit",
   "main": "index.js",
   "repository": {
@@ -17,6 +17,10 @@
     "native",
     "ios"
   ],
+  "bugs": {
+    "url": "https://github.com/terrillo/rn-apple-healthkit/issues"
+  },
+  "homepage": "https://github.com/terrillo/rn-apple-healthkit",
   "author": "Terrillo Walls",
   "license": "MIT",
   "devDependencies": {