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Remove Gemfile.lock

As Katz has said: do not check your Gemfile.lock at your repos when developing
a gem.

Source: http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/
Merge pull request #23 from dlibanori/badges

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Merge pull request #24 from dlibanori/remove-gemfile-lock

Remove Gemfile.lock
Merge pull request #21 from johnnyshields/master

Add mongoization to the field_values hash
Cleanup: Breakout defined_fields into:
- define_fields: Defines the database field to store the denorm data
- define_fields_method: Defines the list of fields to denormalize
Rename:
define_fields -> define_mongoid_field
define_fields_method -> define_denorm_attrs
fields_method_name -> denorm_attrs_name