Backbone 1.1.0 and other fixes
Setting up travis
Increment version to 0.2.0
Merge pull request #41 from C2FO/backbone_upgrade

Updating Backbone to 1.1.0, Underscore to 1.5.2 and some other fixes
Fix memory leak with event binding

* Clone events hash to prevent aggregating events
Merge pull request #42 from C2FO/fix-memory-leak

Fix memory leak with event binding
Bind events once

* Only bind subview events once.
Merge pull request #43 from C2FO/bind-events-once

Bind events once
Adding notFoundCallback to thumbs.History
Merge pull request #44 from aheuermann/notFoundCallback

Adding notFoundCallback to thumbs.History