Removing unneccessary HTTP verbs
Remove database.yml

* Add to gitignore
* Add config/database.yml.example
Remove sqlite3

We should use the same database on every environment
Merge pull request #15 from SCdF/remove_unneccessary_http_verbs

Removing unneccessary HTTP verbs
Merge pull request #12 from edgurgel/remove-database-yml

Remove database yml
Update factory_girl_rails
Add database_cleaner gem
Add DatabaseCleaner to run before each test
Add FactoryGirl.lint to run before the test suite

FactoryGirl.lint will check if every factory is valid before running the
test suite
Fix AdminUser and Answer factories