Less verbose output. Task cleanup

Hey @gobwas, Thanks for the plugin. We use it often. One issue is the output.
Currently:

![image](https://cloud.githubusercontent.com/assets/128755/3715680/a74434ee-15f0-11e4-9f85-a2d79c33491f.png)

After this PR:
![image](https://cloud.githubusercontent.com/assets/128755/3715681/b3b94fe8-15f0-11e4-83a2-a956decfee93.png)

Full output available via `--verbose` flag.

Also removed some code / comments that are not in use.