Center and trim badges, add love to readme
Center and trim badges, add love to readme

Summary:
- Trimmed badges that I think are a little unnecessary
- Added a heart to the "made by"

cc jessesquires thoughts?

- [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/117

Differential Revision: D4089119

Pulled By: rnystrom

fbshipit-source-id: ee9602fc5b7cb9bb004a624ffde89a5dc3c3e743

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