Simplify call to `render`
Remove Empty Helpers
Remove trailing whitespaces
Space out keyword `protected`
Add underscores to large numeric literals
Add PullReview configuration file

- enable review on javascript
- disable doc and dup checks in tests
Merge pull request #2786 from toch/master

Add PullReview configuration file

[skip ci]
Merge pull request #2784 from toch/fix-rails-issues

Fix some rails issues
Double quoted strings satisfy all use cases.
Merge pull request #2787 from refinery/double-quoted-strings-are-just-alright-with-me

Double quoted strings satisfy all use cases.
Added note about skipping CI for docs changes

[ci skip]
Grammar improvement

[ci skip]
Added `bundle exec` to make examples consistent

[ci skip]
Merge pull request #2785 from toch/fix-style-issues

Fix style issues
[DOC] Use bundler binstubs in guides.

[ci skip]
Add rake and rspec bundler binstubs.
Removed `rake refinery:testing:specs` and fixed `rake spec`.
Merge pull request #2788 from refinery/guide-binstubs

[DOC] Use bundler binstubs in guides.
Merge pull request #2789 from refinery/redundant-commands

Removed `rake refinery:testing:specs` and fixed `rake spec`.
Added spring support for slightly faster development.