Rails 4 support
Merge pull request #19 from jtgeibel/patch-1

Improve integration with simple-navigation
Use ruby 2.0.0
Remove builds for Rails 4 and Ruby < 1.9.3
Install bundler
Fix matrix
Fix Rails 4 testing
Disable Rails 4 on rbx-18mode
Tweak GC
Skip development
Do install dev gems
Merge pull request #21 from pusewicz/rails-4

Rails 4 support
add support for icons
fix example
Merge pull request #22 from bcm/icon

add support for icons