added functionality - it.only, jshint, console.log

sorry, @Christopher-Bradshaw, I wasn't suggesting this be an actual test case (that's probably a separate discussion and dependent on repo history/current state).

@jonahkagan Personally I'm fine with overwhelming lint output, since it just indicates we have work to do. To make the implementation here dependent on work we will eventually do in other repos seems strange. If you're worried about overwhelming users, you could provide a switch in repo Makefiles to turn off linting (we do this in most of our Go repos). Or maybe this conversation is an indication that the script here should be much less opinionated and instead let repos decide which files to apply it to.

I will now extricate myself and let you guys decide the best way forward :)