Bump coffee-rails from 4.2.1 to 4.2.2
Bump coffee-rails from 4.2.1 to 4.2.2

Bumps [coffee-rails](https://github.com/rails/coffee-rails) from 4.2.1 to 4.2.2.
- [Changelog](https://github.com/rails/coffee-rails/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rails/coffee-rails/compare/v4.2.1...v4.2.2)
coreyja/package-tracker,coreyja/package-tracker,coreyja/package-tracker