Update package.json (#180)

Author: Crash--

package.json

@@ -35,10 +35,12 @@
     "https://github.com/APSL/react-native-keyboard-aware-scroll-view#readme",
   "dependencies": {
     "@types/create-react-class": "^15.6.0",
-    "prop-types": "^15.6.0",
-    "react-native": "^0.48.4",
+    "prop-types": "^15.6.0",    
     "react-native-iphone-x-helper": "^1.0.1"
   },
+  "peerDependencies": {
+    "react-native": "^0.48.4"
+  },
   "devDependencies": {
     "babel-eslint": "^8.0.1",
     "babel-preset-react-native": "^4.0.0",