node support
add tests for node
readme notes
Add ability to use buffers
Merge pull request #1 from piscis/master

Add ability to use buffers
Fixes issue #32
Fix variable leak
Add component.json, for component.io usage
Expose low-level functions which does not clean up the canvas

Useful to re-use the canvas instance in further image analysis
with other libraries/methods.
Merge pull request #2 from jonnor/low-level-api-and-component-io

Low level api and component io
release 2.1.0
Merge remote-tracking branch 'node-support/master'

Conflicts:
	.gitignore
	package.json
Merge remote-tracking branch 'patch-32/patch-1'