rendering for edgeCurve true or false is working with click and hover
fixe edge captions to display with curved edges
Merge branch 'v0.2' into edgecaptions

Conflicts:
	app/scripts/alchemy/models/edge.coffee
change to semantics in model
fixing drag interactions to use node drawing
clustering into its own folder and class
index.html changes
Merge branch 'hustonhedinger-edgecaptions' into v0.2
Merge branch 'v0.2' of https://github.com/GraphAlchemist/alchemy into v0.2

Conflicts:
	app/scripts/alchemy/drawing/drawEdges.coffee
	app/scripts/alchemy/drawing/drawingUtils.coffee
	app/scripts/alchemy/models/node.coffee