Do not use mb_chars for keywords (bug in 1.9.3, plus it is not required in 1.9+)
Updated README with Ruby on Rails versions information
Added meta-tags.rb to simplify usage with bundler
refactoring
Reducing complexity of MetaTagsCollection#build_full_title
Simplified title separator extraction code
Simplified noindex tags generator
Added documentation for Tag and ContentTag classes, and TextNormalizer module
Documentation for MetaTagsCollection, Rendered, and TextNormalizer
In normalize_open_graph - duplicate source hash with it is already HashWithIndifferentAccess
Use ActiveSupport::Concern for ControllerHelper
Make Yard happy
Preparing version 2.0.0
Added Gem Version and Code Climate badges