fix issue 433
fix issue 433

Summary:
- [ ] All tests pass. Demo project builds and runs.
- [ ] I added tests, an experiment, or detailed why my change isn't tested.
- [x] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes.
- [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/436

Differential Revision: D4448494

Pulled By: rnystrom

fbshipit-source-id: 09bfdff37dbe0ee718e9e8feb486204e1f55893a

zhubofei/IGListKit,dshahidehpour/IGListKit,zhubofei/IGListKit,zhubofei/IGListKit,charles0126dev/IGListKit,Instagram/IGListKit,Instagram/IGListKit,zhubofei/IGListKit,dshahidehpour/IGListKit,Instagram/IGListKit,Instagram/IGListKit,zhubofei/IGListKit,charles0126dev/IGListKit,dshahidehpour/IGListKit,Instagram/IGListKit,charles0126dev/IGListKit