Replace watcher.js with broccoli-sane-watcher.
Update to broccoli-sane-watcher 0.3
Add watch command
Improve error handling
make jshint happy
Merge pull request #1 from zigomir/patch-1

make jshint happy
Merge branch 'replaceWatcherWithBroccoliSaneWatcher' of github.com:jschilli/broccoli