Opt-in to output 'Skip as no hooks defined'

[ni5ni6]

Hi,

I find it useful not to print out mocked test when skipped.
So in test-runner.coffee:

# No Hooks for this test
if not hooks.hasName(test.name) and options['hooks-only']
  # suite.addTest new Mocha.Test 'Skip as no hooks defined'
  return