Removed unnecessary 'Mongolid' nested namespace.
Created Plansky\MongoLidBundle\Document\BaseDocument

This class will handle all peculiarities of the Symfony Framework.
By now, it just extends Zizaco\Mongolid\Model class.
Update README.md with current status of bundle

- Added basic usage and some important links.
Added configuration rules to set MongoLid connection parameters.

If bundle configuration was not present in app/config.yml file,
the default values of MongoDB will be used:
    - hostname: localhost
    - port: 27017
    - username: <null>
    - password: <null>

And MongoLid will connect to database 'mongolid' automatically.

If you want to override this settings, just follow this structure
in app/config.yml:

mongolid:
  connections:
    default:
      hostname: '192.168.0.1'
      port: 17027
      username: 'mongolid-username'
      password: 'ultra-mongo-secret'
      database: 'another_mongo_db'

You can overwrite only the parameters that you want, i.e:
mongolid:
  connections:
    default:
      username: 'mongo-user'
      password: 'mongo-pass'

Thus, MongoLid will connect to 'mongolid' database at on
localhost:27017 using 'mongo-user' and 'mongo-pass' credentials