Hi Elliot - this is my first pull request so apologies if I've stuffed it up.
railtie_name is deprecated and has no effect
support for type funnel
Rails::Application is deprectated in Rails 3. Changed to Rails.applic…
Thanks for this, that's great! I've merged these changes in, and just made a few slight tweaks (f157dab). I added a test for the funnel widget, and also changed it so that to hide the percentage you have to pass in :hide_percentage (and not just :percentage). Lastly, I just made the items array an array of hashes explicitly specifying a value, and a label, to be consistent with other widgets. If you have widgets using your code already they should be fairly easy to update to work with v0.2.2 of Chameleon and the changes I made.
Thanks for your contribution!