When updating deps, show diff and sign off on it

[ghost]

No description provided.

[whyrusleeping]

This would be a post-update hook. gx needs to be able to have a nice way to run multiple commands for a given hook type, so for post-update, it could run the language specific hook, then run another hook (the one proposed for the issue) from a config value in the package.json

I will have to think of the best way to do this.

[Kubuxu]

Nice option would be too change the language filed in package.json (as it was discussed in other issue) to something more general and allow to place either string or array of strings in there.

[whyrusleeping]

@Kubuxu hrm... thats an interesting idea. that way you could put in: "go", "git", "signed" and so on, to chain behaviours