exit the process immediately upon Ctrl+C

[TooTallNate]

During the deployment selection prompt, don't print out a stack
trace of the "Aborted" error to the user, just exit the process
directly.

[rauchg]

Question: do we still need the exit() wrapper?

[TooTallNate]

Before:

❯ now
> Deploying ~/GitHub/zeit/ace-resolve under zeit
> Two manifests found. Press [n] to deploy or re-run with --flag
> [1] package.json	   --npm
> [2] Dockerfile	--docker
Error: Aborted
    at ReadStream.ondata (/snapshot/home/travis/build/zeit/now-cli/lib/utils/prompt-options.js:20:16)
    at emitOne (events.js:96:13)
    at ReadStream.emit (events.js:189:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at ReadStream.Readable.push (_stream_readable.js:134:10)
    at TTY.onread (net.js:551:20)
> Error! Unknown error: Error: Aborted
Error: Aborted
    at bail (/snapshot/home/travis/build/zeit/now-cli/node_modules/async-retry/lib/index.js:14:39)
    at retry (/snapshot/home/travis/build/zeit/now-cli/bin/now-deploy.js:403:22)
    at process._tickCallback (internal/process/next_tick.js:103:7)

Now:

❯ now
> Deploying ~/GitHub/zeit/ace-resolve under zeit
> Two manifests found. Press [n] to deploy or re-run with --flag
> [1] package.json	   --npm
> [2] Dockerfile	--docker

[TooTallNate]

Question: do we still need the exit() wrapper?

Good question. I think not for newest versions of Node.js, but then the question is how far back do we support?