[Feature] Error handling

[Martinspire]

It would be nice if this module would handle errors or potential problems. Sometimes i have some users who run into things that can be avoided or should state a more simple error to help identify the problem (or ease communication).

So things i suggest:

• Handle connectivity issues (no connection available, firewall blocking, etc)
• Git errors (git not found, wrong version, etc)
• File errors (permissions, not existing, etc)
• Bower errors (wrong versions specified, wrong module names, etc)

And there are probably some more things to check.

I'm not sure whether everything is possible or not, but i'm guessing it should be able to tackle a few things and show better errors, since this acts as a layer around Bower.

[rhou-sdcc]

This would be great, but not sure if this rep is still under maintained. +1 for you .