Update to rspec 3.1
Update to rubocop 0.26
Fix style offenses
Fix YARD warning
Ignore vendor directory too

15ef773dd6fb42e962b9144f24d731419c6a05b3
Use default YAML style

00c29c4c8c1ef58e3f39a1dcc223636e81dc3bea
Fix #224; singularize filters inside arrays
Update changelog
Add specs for #224

:pager: @AaronLasseigne
remove block arg because we are using the implicit block with yield
Update to rubocop 0.27

I disabled MultilineOperationIndentation because it didn't make
sense. It wanted to reformat this:

    foo = bar
      .baz

Into this:

    foo = bar
          .baz
Fix #228; switch to kramdown

This should populate our documentation on RubyDoc.info.

See also #27 and #9.
syntax highlight for ruby example code
Gracefully handle objects that don't support #inspect
Add a test for handling basic objects

This is what caused me to discover the problem I fixed in 7598c26.
Switch to flat badges
Do what IRB does
Update to rubysl 2.1
Fix #235; prepend locales to i18n load path
Fix #233; treat ActiveRecord::Relation objects as arrays