chore(package): update react-native to version 0.61.3

Closes #7

Author: greenkeeper[bot]

package.json

@@ -51,7 +51,7 @@
     "mocha": "^4.0.1",
     "react": "~15.4",
     "react-dom": "~15.4",
-    "react-native": "^0.42.0",
+    "react-native": "^0.61.3",
     "react-native-mock": "^0.3.1",
     "rimraf": "^2.6.2",
     "safe-publish-latest": "^1.1.1"