updates per issues

[doowb]

This PR addresses a few issues:

• unused properties #24 removing unused properties
• name in task event is undefined #21 and emit task and build #20 refactors events so only 3 events are emitted:
  • task when a task is registered, starting, and finished. Task emitted with status populated.
  • build when a build is starting and finished. Build has runtime information and status populated.
  • error on errors with additional .app, .task, and .build properties

TODO: before merging finish up a couple other issues:

• request: return a promise from .build #28 return promise from .build
  • when cb is not passed in, return promise
  • only accept 3 parameters (tasks, options, cb)
• request: add formatted run time to Run object #23 add human readable formatted time and duration properties

[jonschlinkert]

awesome! thanks!!!

[doowb]

np... I'm updating some docs and will have this published in a little bit. Going to publish as 1.0.0 since there were breaking changes.