Moved assets into app/assets and added spinner to asset pipeline
Updated specs: use Minitest and relocate into filterrific namespace
Updated .gitignore
Removed unused gems from Gemfile
Updated .gemspec: Require Rails 3.1 or greater, added wwtd for travis simulation on dev machine.
Updated Rails engine: isolate_namespace and remove obsolete require of rails.
Added bin/rails so that rails commands work as expected
Updated License date
Updated .travis.yml: use wwtd and update Ruby version
Revert rake task for travis to make it work with wwtd.