Add test for shares_controller.
Move the share create action to activity_object.
Change documentation style and add/remove blank line
Updated badge URLs.
Merge pull request #195 from dominicgoulet/master

Updated badge URLs.
Merge pull request #194 from MartinGoulet/refactoring-share

Refactoring shares_controller
Extra empty line detected at body beginning and end.
Use the new Ruby 1.9 hash syntax.