readme updates
more readme updates
added support for over and out events
added support for grid
bugfix for when an element is both draggable and droppable
add initial qunit test, support programmatic scope change, require indexOf function to be plugged in
add initial qunit test, support programmatic scope change, require indexOf function to be plugged in
update demo page to console log a drop event
Merge pull request #1 from jsplumb/master

merge changes for initial release