[Feature Request] Ability to specify where to find the .git folder

[EdgarOrtegaRamirez]

What's going wrong?

I cannot specify a different path for my .git folder, so I'm not able to see it when running pm2 ls.

How could we reproduce this issue?

When you use capistrano, you end up with a folder structure where you .git folder is not in the current path.
Check this line:

pm2/lib/God.js

Line 444 in fd1f52d

vizion.analyze({folder : current_path}, function recur_path(err, meta){