reactjs/react-rails

### Summary

_Remove this paragraph and provide a general description of the code changes in your pull
request... were there any bugs you had fixed? If so, mention them. If
these bugs have open GitHub issues, be sure to tag them here as well,
to keep the conversation linked together._

### Other Information

_Remove this paragraph and mention any other important and relevant information such as benchmarks._

### Pull Request checklist
_Remove this line after checking all the items here. If the item is not applicable to the PR, both check it out and wrap it by `~`._

- [ ] Add/update test to cover these changes
- [ ] Update documentation
- [ ] Update CHANGELOG file