update .gitignore
Install capybara, poltergeist & launchy
[WIP] Golden path test, input..preview
Golden path e2e testing
Cleanup database
Do'not use txn for sqlite3 cleaning
Coverage report on Codeclimate
Merge pull request #5 from esminc/e2e-testing

End-to-End testing with Capybara & Poltergeist
Support Rails 3.2, 4.0, 4.1