exit the process immediately upon Ctrl+C (#540)

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

bin/now-deploy.js

@@ -348,7 +348,7 @@ async function sync({ token, config: { currentTeam, user } }) {
 
   let meta
   await retry(
-    async bail => {
+    async () => {
       try {
         meta = await readMetaData(path, {
           deploymentType,
@@ -399,8 +399,13 @@ async function sync({ token, config: { currentTeam, user } }) {
                 ]
               ])
             } catch (err) {
-              console.error(err)
-              return bail()
+              if (err.code === 'USER_ABORT') {
+                if (debug) {
+                  console.log(`> [debug] Got Ctrl+C, aborting`)
+                }
+                return exit(1)
+              }
+              throw err
             }
 
             if (debug) {
@@ -412,9 +417,9 @@ async function sync({ token, config: { currentTeam, user } }) {
             // Invoke async-retry and try again with the explicit deployment type
             throw err
           }
+        } else {
+          return stopDeployment(err)
         }
-
-        return stopDeployment(err)
       }
     },
     {

lib/utils/prompt-options.js

@@ -1,7 +1,9 @@
 // Packages
 const chalk = require('chalk')
 
-module.exports = function(opts) {
+module.exports = promptOptions
+
+function promptOptions(opts) {
   return new Promise((resolve, reject) => {
     opts.forEach(([, text], i) => {
       console.log(`${chalk.gray('>')} [${chalk.bold(i + 1)}] ${text}`)
@@ -15,10 +17,12 @@ module.exports = function(opts) {
         process.stdin.removeListener('data', ondata)
       }
 
+      // Ctrl + C
       if (s === '\u0003') {
         cleanup()
-        reject(new Error('Aborted'))
-        return
+        const err = new Error('Aborted')
+        err.code = 'USER_ABORT'
+        return reject(err)
       }
 
       const n = Number(s)