Split into two npm modules: one for jslint editions, one for node cli/reporters

[smikes]

Make it easier for others to consume the 'multiple editions' code by splitting it into a separate module.

[karimsa]

I have created a new npm module to maintain the JSLint versions available at: https://github.com/karimsa/jslint-ed

For node-jslint to be able to list the editions I have also added exporting of the list of editions.

Is this proper for your use case?

[smikes]

Not quite what I had in mind: I was hoping for something that manages downloading new versions of jslint as they're published