add slides url and remove url
Merge pull request #2 from simonc/master

Adding a Fork me on Github Ribbon
Updating the gems
Updating devise.en.yml
Updating environments
Using rails-i18n for core translations
Removing hard compiled assets
Compiling assets in production
Merge branch 'master' of github.com:tibastral/presentations
Merge pull request #4 from tibastral/rails-32

Moving to Rails 3.2.2
Merge branch 'master' of github.com:tibastral/presentations
Better design and typekit integration
change to paragraphs (for typekit)
Form with a better looking
Color changes
Improve graphics, improve readability
Show more relevant talk listing (opacity in old talks)
Better presentation
Improve presentation of the presentation listing
Updated gems