Simplify start command.

Author: DylanVann

example/package.json

@@ -2,7 +2,7 @@
   "name": "FastImage",
   "version": "0.0.1",
   "scripts": {
-    "start": "node node_modules/react-native/local-cli/cli.js start",
+    "start": "react-native start",
     "test": "jest"
   },
   "dependencies": {
@@ -18,6 +18,7 @@
     "babel-jest": "19.0.0",
     "babel-preset-react-native": "1.9.1",
     "jest": "19.0.2",
+    "react-native-cli": "^2.0.1",
     "react-test-renderer": "16.0.0-alpha.6"
   },
   "private": true,