Groups api additions

-Get group
-Create Group
-Added transfer_project_to_group/unit test
Merge pull request #7 from karlhungus/group_additions

Groups api additions
remove unnecessary code
update copyright
update travis-ci config with ruby-2.0
add support for POST /projects/user:user_id
consistently refer to feature as "project for user" per documentation @ https://github.com/gitlabhq/gitlabhq/blob/master/doc/api/projects.md#create-project-for-user