GitHub automatically inserts anchors [ci skip]
GitHub removed voting on issues a while ago [ci skip]
Add links to pull request instructions
Remove executable attributes and shebang line
Move "Contributing" section into dedicated document for better GitHub integration

See https://github.com/blog/1184-contributing-guidelines.
Replace should and should_not with expect
Using expect requires rspec version 2.11.0 or greater
Fail fast
Add #licenses declaration to gemspec
Parse Markdown with kramdown
Move development dependencies into Gemfile
Update YARD task
Convert to Ruby 1.9 hash syntax