use commander's own sub command feature

Author: yyx990803

bin/vue

@@ -1,66 +1,8 @@
 #!/usr/bin/env node
 
-var exists = require('fs').existsSync
-var join = require('path').join
-var logger = require('../lib/logger')
-var program = require('commander')
-var resolve = require('path').resolve
-var spawn = require('child_process').spawn
-var stat = require('fs').statSync
-
-/**
- * Usage.
- */
-
-program
+require('commander')
   .version(require('../package').version)
   .usage('<command> [options]')
-
-/**
- * Help.
- */
-
-program.on('--help', function () {
-  console.log()
-  console.log('  Commands:')
-  console.log()
-  console.log('    init        generate a new project from a template')
-  console.log('    list        list available official templates')
-  console.log()
-})
-
-/**
- * Parse.
- */
-
-program.parse(process.argv)
-if (!program.args.length) program.help()
-
-/**
- * Settings.
- */
-
-var cmd = program.args[0]
-var args = process.argv.slice(3)
-var name = 'vue-' + cmd
-
-/**
- * Resolve a local or remote executable.
- */
-
-var bin = join(__dirname, name)
-if (!exists(bin)) {
-  bin = process.env.PATH.split(':').reduce(function (binary, path) {
-    path = resolve(path, bin)
-    return exists(path) && stat(path).isFile() ? path : binary
-  }, bin)
-}
-
-if (!exists(bin)) logger.fatal('The "%s" command does not exist.', name)
-
-/**
- * Spawn a new, forwarded child process with the executable.
- */
-
-spawn(bin, args, { stdio: 'inherit' })
-  .on('close', process.exit.bind(process))
+  .command('init', 'generate a new project from a template')
+  .command('list', 'list available official templates')
+  .parse(process.argv)

bin/vue-init

@@ -17,7 +17,7 @@ var chalk = require('chalk')
  */
 
 program
-  .usage('<template> <project-name>')
+  .usage('<template-name> <project-name>')
 
 /**
  * Help.

package.json

@@ -1,12 +1,10 @@
 {
   "name": "vue-cli",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "A simple CLI for scaffolding Vue.js projects.",
   "preferGlobal": true,
   "bin": {
-    "vue": "bin/vue",
-    "vue-init": "bin/vue-init",
-    "vue-list": "bin/vue-list"
+    "vue": "bin/vue"
   },
   "scripts": {
     "test": "mocha"