* Update dependencies

* Lint and test

* Added react-native fork

* rn 57

* Lint and tests updated

* Update xcode on circleci

* Use legacy build system

* Update tests

<!-- INSTRUCTION: Keep the line below to notify all core developers about this new PR -->
@RocketChat/ReactNative

<!-- INSTRUCTION: Inform the issue number that this PR closes, or remove the line below -->

<!-- INSTRUCTION: Tell us more about your PR with screen shots if you can -->