Google Analytics module for ci-bonfire.

Based on the library found here http://codeigniter.com/forums/viewthread/128945/

INSTALL
===========================================
Drop analytics folder in modules folder.
Drop analytics.php in aplication/config.
Run migration, set permissions and you're ready to use it.

CONFIGURING
===========================================
You'll need a valid google analytics account to use 
this module.
Head over to settings->analytics and set your GA 
username and password.

The other two fields are not yet used.