Change task.color to task.classes.
Add compressed source: angular-gantt.js.
Combines all templates as inline scripts into gantt.tmpl.html
Added est and lct task properties to readme file
Added track by to every ng-repeat
Merge branch 'feature/add-task-classes' of https://github.com/chexxor/angular-gantt into feature/pull-request-37

Updated readme to contains new 'classes' property on task.