Added very permissive react-native dev dependency

Author: johanneslumpe

package.json

@@ -23,5 +23,7 @@
     "base-64": "^0.1.0",
     "bluebird": "^2.9.25"
   },
-  "peerDependencies": {}
+  "devDependencies": {
+    "react-native": "*"
+  }
 }