Update README.md
Merge branch 'master' of https://github.com/rotundasoftware/backbone-collection-view
Added tests for get/setSelectedItem/s by offset for table views
Fixed bug with get/setSelectedModel/s by offset for table views
Merge pull request #2 from colinwren/master

Created tests for and fixed bug in get/setSelectedModels by offset for table view

Thanks!
-Oleg