Add rubocop
Favor modifier if/unless usage when you have a single-line body.
Use %i or %I for array of symbols.
Use `fail` instead of `raise` to signal exceptions.
Use single-quoted string
Use `module_function` instead of `extend self`
Use single-quoted strings
Place the . on the next line, together with the method name.
Shorten line
Avoid using {...} for multi-line blocks.
Shorten line
Speedup simplecov
Mute AlignParameters check
Limit lines to 120 characters.
Merge remote-tracking branch 'origin/master' into update-bin-quality

* origin/master:
  Include SkipTrackable separately
  Use bin/quality instead of script/quality in CI
  Skip updating Devise trackable fields for auth_token based requests

Conflicts:
	bin/ci
Merge pull request #27 from fs/update-bin-quality

Update bin quality