Added project files.

Added a generator.
Added a template for gem handling and general setup.
Added a .railsrc file which invokes default preferences.
Added a small README description.

Now there is a README.md file explaining how to install and use.
Deleted acts_as_* gems

As a rule of thumb, this script will not automatically create models, a
decision that is more consistent with the advice of taking full control
over the entire application model.
Removed automatic User creation.

Devise is configured but no user model is created anymore, because some
decisions on how user models work are taken after project creation.
Arranged gems and other minor modifications.

- Arranged gems by type.
- Database configuration file now includes the default sample.
- Removed the recaptcha gem, I didn't use it for anything.
- Removed therubyracer, less and less-rails.