recommended way to 'fail' a command

[whyrusleeping]

What is the recommended way for a command to fail (and have a non-zero exit code).

I'm currently just using os.Exit(1), but i feel like the Action function could return an error to simplify that work.

[jszwedko]

@whyrusleeping agreed, having the command return an error would be ideal, but because it is an API breaking change, I'm reticent to make it until we cut a 2.0. See #266 for possible implementation.

[whyrusleeping]

@jszwedko ah, wonderful.

[jszwedko]

Supported by #361 thanks to @meatballhat !