Added dragging bus, deleting bus; fixed output edges position
Merge branch 'master' of https://github.com/deniskoronchik/scg-web.git

Conflicts:
	scg.js
	src/scg-model-objects.js
	src/scg-render.js
	src/scg-scene.js
Added test for SCg bus
Removed possibility to draw bus out of other bus
Merge branch 'master' of https://github.com/deniskoronchik/scg-web.git

Conflicts:
	scg.js
	src/scg-model-objects.js
	src/scg-render.js
	src/scg-scene.js
Merge pull request #18 from KiselN/master

Issue #12. Support of SCg buses