HELP WANTED: Update edition for Pattern Lab Node Core 3.0

[bmuenzenmeyer]

At least

• https://github.com/pattern-lab/patternlab-node/issues/803
• README
• Default Config as part of https://github.com/pattern-lab/patternlab-node/issues/745 - done in 9ccbeb0
• Grunt Tasks

[bmuenzenmeyer]

Remaining work should coincide with similar changes to the README and tasks found within https://github.com/pattern-lab/edition-node-gulp

[bmuenzenmeyer]

I am no longer maintaining edition-node-grunt. if someone wants to finish this work and make it work with Pattern Lab Node 3.0 - please do!