Remove unnecessary dependencies
Refractored README.md and UPGRADING.md
Post install message fix
Merge pull request #449 from seuros/master

Improve migration/upgrade instructions
Remove I18n Deprecation warning in tests.
Add ruby 2.1.0 to Travis
Merge pull request #452 from seuros/master

[Tests] Remove I18n Deprecation warning in tests.
Merge pull request #453 from seuros/travis

[Test] Add ruby 2.1.0 to Travis
Fixed README

I think it's more readable :D
Merge pull request #454 from takashi/patch-2

[Doc] Fixed README
fix as_8bit_ascii changes argument's encoding
update CHANGELOG.md
Merge pull request #456 from znz/fix-as_8bit_ascii-breaks-arguments-encoding

[Fix] as_8bit_ascii changes argument's encoding
Add page on contributing
Bump to 3.0.1; update changelog
Needless class_eval

This was doing nothing dynamic, and the eval is wastefully repeated if
there are multiple calls to `acts_as_taggable_on` with a context.

The helper for these methods is already a regular instance method not
used anywhere else, so the `tag_types.empty?` guard wasn't exactly a
huge win in saving namespace pollution.
Unused variables
Whitespace :innocent:
Redundant include silliness

Know an Ruby module. This stuff confuses and misguides newcomers.

http://yehudakatz.com/2009/11/12/better-ruby-idioms/
De-ugly line continuations