added sprint controller and views
switched to respond_with, added messages partial
fixed the sprints controller to cover all scenarios
added list selector to fetch the current sprint list
added guard and sublime-text-ruby-test for automated tests
changed classes to use new lists including sprint
changed list selector to avoid error when no sprints exist
fixed class to include sprint list
changed data point names to include only sprint number
changed controller to include sprint data
changed chart colors to flat because im a hipster
changed default timezone to Brasilia
Merge pull request #7 from magnetis/sprints

Sprints