Initial implementation of JSLint gulp plugin

@pandell/core-developers

@jgoz suggested some alternatives:

- `pipeToTask` - this one is a bit confusing to me, suggests we will be piping something to a task, I would expect task to be specified as a parameter.

- `taskFromStreams` - I like this variation of the current name; it indicates that we are creating a task and what the parameters mean. :+1: from me.

Any preference? Other suggestions?