Generate Rails application

A new Rails application has been generated using the default Rails generator. Test::Unit was skipped, since we want to use RSpec instead.
Reorganize Gemfile

Unused gems have been removed from the Gemfile, and groups for development and production have been added.
Configure production environment

We want to deploy to Heroku, and have configured the application to match Heroku's recommendations.
Configure test environment

We use RSpec for tests, Factory Girl to create objects, Faker to fill those objects and database cleaner to remove the objects.
Automatically require spec/support directory

All files in the spec/support directory should be required automatically.
Activate i18n

All string should be localized to allow users to quickly adopt the application to their native language.
Add configuration for Travis CI

The Travis CI configuration file has been added, and filled with some reasonable defaults.
Merge branch 'feature/create-application' into develop