context output config

[GantMan]

Right now you can only have gluegun print to console.

What about allowing gluegun to be configurable so anything built on GG can have CLI OR Library benefits.

context.print.stdout = true (by default)
context.print.json = true (false by default) will store all print.success, and print.error, and print.warn messages in a JSON file so this can be passed on to GUI or other apps. Accessible by context.print.jsonLog for the full log.

That's all that's requested in this issue, but possible upgrades in the future?
.xml, .file, .api the list goes on.

[jamonholmgren]

I like this idea a lot. Perhaps goes with #161 as well.

[GantMan]

Yes! Hand in hand!

[jamonholmgren]

Planned for post-2.0 release.