Update README.md, link for rubyonrails.org

remove extra 'http://'
allow compass-rails without asset pipeline on Rails 3.2
rails 4 beta support
Update test/helpers/file_helper.rb
Update to reflect changes in Sprockets

See ai/compass-rails@9d8069d54a66a3bcf20e8c7ebdccde681104a6af
remove rails 2.3 support
removed rails 2.3 test
add ruby 2.0 to travis
added travis ci build status
Merge pull request #56 from renchaoevee/patch-1

Update README.md, link for rubyonrails.org
merged in PR #64
fix generated_image_url when generated_images_dir is set
Merge branch 'fix_generated_image_url' of github.com:s12chung/compass-rails into rails4
updated compass dependency to latest alpha for testing
Fixed typo “the the”.
Fix broken link to sass-rails' README.
hacking round on rails 4 stuff
Sass options fix
Merge pull request #91 from hazg/rails4-sass-config

Sass options fix
use the real way to access the manifest