working on linegraph
minor changes
Merge branch 'develop' into linegraph

Conflicts:
	dist/vis.js
	dist/vis.min.js
updated linegraph, axis style complete
Merge branch 'develop' into linegraph

Conflicts:
	dist/vis.js
	dist/vis.min.js
	src/graph/Graph.js
first working version! =]
added graph3d
filtering not working at the moment
graph3d functional, examples and playground working. Docs need to be done.
graph3d functional
graph3d finished for vis
Merge branch 'graph3d' into develop