Add in Rake task to create indexes
Hide the queries from the outside world.

Ratings will only return their values from now on. End developers
shouldn't be concerned with the underlying Mongo queries. Only cache
person lookups.
Add in versions to the gemspec
Add in development dependencies to gemspec
Rspec this!
Add in Combustion rails app

This will allow us to test the how the gem injects into a rails app, and
not just the gem itself
Add in FactoryGirl factories.

These will be expanded in the future. For right now, they're just
creating Combustion's models
Start testing Combustion's models

This is just the beginning...
Make sure before_destroys are called including gem's modules

This will allow us to destroy a person or his ratings when that person
is destroyed in the main app
Make sure we ignore Combustion's test.sqlite