Chattiness flags

[abhinav]

gopatch is completely quiet right now. We should add flags for verbosity.

Initial ideas:

• -v flag for verbose mode where we'll list whether we changed files or not
• -l flag to list files that were changed only

[edmondop]

Is this still actual? Or should this be closed with #22 ?

[abhinav]

Yeah, this can be closed. Thanks!