doc change
constraint element for Draggables
making the options.{top,right,bottom,left} have no default, fixes problem with page chaning size
adding support for margins
random improvements, elOrSelector
fix handles
Merge branch 'fixDraggables' into develop
Ink.extendObj can now extend an object from multiple sources
Take options from element data
Merge pull request #7 from fabiosantoscode/develop

Draggable improvements