chore(package): update react-native to version 0.61.1

Closes #17

Author: greenkeeper[bot]

package.json

@@ -49,7 +49,7 @@
     "prettier": "^1.16.4",
     "react": "^16.8.6",
     "react-dom": "^16.8.5",
-    "react-native": "^0.59.2",
+    "react-native": "^0.61.1",
     "semantic-release": "^15.13.3",
     "ts-jest": "^24.0.0",
     "tslint": "^5.14.0",