message: Adds CI badge for native tests.
diff: @@ -12,7 +12,9 @@ Inside Emission you will find:
  - **State:** production
  - **Point People:** [@alloy](https://github.com/alloy), [@ashfurrow](https://github.com/ashfurrow)
  -- **CI:** [![Build Status](https://travis-ci.org/artsy/emission.svg?branch=master)](https://travis-ci.org/artsy/emission)
  +- **CI:**
  + - React Native components: [![Build Status](https://travis-ci.org/artsy/emission.svg?branch=master)](https://travis-ci.org/artsy/emission)
  + - Native unit tests: [![CircleCI](https://circleci.com/gh/artsy/emission.svg?style=svg)](https://circleci.com/gh/artsy/emission)
  - **[Troubleshooting](https://github.com/artsy/emission/blob/master/docs/troubleshooting.md)**
  This is a core [Artsy Mobile](https://github.com/artsy/mobile) OSS project, along with [Energy](https://github.com/artsy/energy), [Eidolon](https://github.com/artsy/eidolon), [Eigen](https://github.com/artsy/eigen) and [Emergence](https://github.com/artsy/emergence).
  