fully fledged selection capabilities
minor fixes to selections
minor fixes to selections
contextmenu event handling added
keydown bug fix
selection bug fixes
selection in the example is changed
Merge branch 'master' of https://github.com/bolshchikov/ember-table

Conflicts:
	src/component.coffee
Fix selection by arrows and shift
fix ctrl/command row selection
anti scroll incorporated into ember table (i.e. not through dependency mgmt)
Select unselected rows with mousedown (need for drop and drag)
Trigger selection change and fix ctrl/command + click selection