Watch mode

[evanp]

As with vows 0.x, running with -w should:

• Watch for new/updated/deleted files in the current working directory
• Re-run the specified tests when there are any change

[evanp]

Is it better to build this into vows, or just to recommend another program like nodemon?

[evanp]

Or is the idea that you'd only run a suite module if the suite changed or any of the files it require()'s changes? That actually seems pretty useful when you have a very big set of test modules.