Test Ettu against a real Rails app

This means changes in Rails Asset Pipeline will actually break tests,
instead of them being covered up by the stubbing done to emulate Rails.
Appraise Ettu against all releases of Rails 4
Fix travis installs
Cleanup after tests

Was causing an error with later tests
Test against Rails v4.0.4 and v4.1.0
Fix README
Add note about Rails compiled assets in specs
Make sure the dummy app has a db directory
Fix Rubinius Travis-CI install
Rearrange specs folder
Fix testing in JRuby
Remove ActiveRecord layer from dummy app
Require support files relative to spec_helper
Only test minor versions
Setup Bundler in Rakefile, so I don't have to `bundle exec`
Fix misspellings
Merge pull request #3 from cloudspace/real_rails_test

Real Rails tests