[Improving documentation]

* Add ignored files to .gitignore
* Removed ignored files from git
[Improving documentation]

* Changes application layout to haml instead of erb
* Mount engine inside dummy app
* Changes db/schema after run migrations
[Improving documentation]

* Adds more information to README file
[Improving documentation]

* Add model name to accesss in the console
Merge pull request #5 from zalapeach/feature/add-documentation

Feature/add documentation