fix(package): update react-dom to version 16.4.1

Closes #76

Author: greenkeeper[bot]

package.json

@@ -90,7 +90,7 @@
     "raf": "3.4.0",
     "react": "16.4.1",
     "react-dev-utils": "^5.0.0",
-    "react-dom": "^16.2.0",
+    "react-dom": "^16.4.1",
     "react-i18next": "^7.4.0",
     "react-native": "0.54.2",
     "react-native-material-ripple": "^0.8.0",