chore(package): update react to version 16.6.0

Closes #17

Author: greenkeeper[bot]

package.json

@@ -61,7 +61,7 @@
     "eslint-plugin-react": "^7.3.0",
     "jest": "^23.0.0",
     "package-self": "^1.1.1",
-    "react": "16.4.0",
+    "react": "16.6.0",
     "react-dom": "^16.4.0",
     "react-test-renderer": "^16.4.0",
     "size-limit": "^0.18.1"