Added create group method. Just a specialized wrapper around createEntity.
Added function to add user to group.
Fixing issue with adding user to group.
Testing change.
added documentation to group creation and adding users group.
Adding support for deleting groups.
Added remove user from group functionality.
Cleaned up and added documentation for creating and deleting groups, as well as adding and removing users from groups.
Added updates to the minified version of the SDK as well.
Merge pull request #7 from mdobson/group-support

Group support