Merge branch 'develop'

Conflicts:
	src/dataset.coffee
	src/layer.coffee
	test/datasetSpec.coffee
	test/layerSpec.coffee
Added package.json
Merge branch 'develop' of github.com:yarmiganosca/coffeeplots into develop
Merge branch 'develop'
Merge branch 'master' of github.com:yarmiganosca/coffeeplots

Conflicts:
	src/dataset.coffee