Add license and source info

Fixes facebook#4101.

Author: mkotsbak

react-native-cli/package.json

@@ -1,11 +1,16 @@
 {
   "name": "react-native-cli",
   "version": "0.1.7",
+  "license" : "BSD-3-Clause",
   "description": "The React Native CLI tools",
   "main": "index.js",
   "engines": {
     "node": ">=4"
   },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/react-native.git"
+  },
   "scripts": {
     "test": "mocha"
   },