feat: support --bare flag when creating new projects

close #2030

packages/@vue/cli-service/generator/router/template/src/views/Home.vue

@@ -1,9 +1,14 @@
 <template>
   <div class="home">
     <img src="../assets/logo.png">
+    <%_ if (!rootOptions.bare) { _%>
     <HelloWorld msg="Welcome to Your Vue.js App"/>
+    <%_ } else { _%>
+    <h1>Welcome to Your Vue.js App</h1>
+    <%_ } _%>
   </div>
 </template>
+<%_ if (!rootOptions.bare) { _%>
 
 <script>
 // @ is an alias to /src
@@ -16,3 +21,4 @@ export default {
   }
 }
 </script>
+<%_ } _%>

packages/@vue/cli-service/generator/template/src/App.vue

@@ -2,9 +2,14 @@
 <template>
   <div id="app">
     <img src="./assets/logo.png">
+    <%_ if (!rootOptions.bare) { _%>
     <HelloWorld msg="Welcome to Your Vue.js App"/>
+    <%_ } else { _%>
+    <h1>Welcome to Your Vue.js App</h1>
+    <%_ } _%>
   </div>
 </template>
+  <%_ if (!rootOptions.bare) { _%>
 
 <script>
 import HelloWorld from './components/HelloWorld.vue'
@@ -16,6 +21,7 @@ export default {
   }
 }
 </script>
+  <%_ } _%>
 <%_ } else { _%>
 <template>
   <div id="app">
@@ -27,8 +33,9 @@ export default {
   </div>
 </template>
 <%_ } _%>
-
+<%_ if (!rootOptions.bare) { _%>
 <%_ if (rootOptions.cssPreprocessor !== 'stylus') { _%>
+
 <style<%-
   rootOptions.cssPreprocessor
     ? ` lang="${
@@ -99,3 +106,4 @@ export default {
 <%_ } _%>
 </style>
 <%_ } _%>
+<%_ } _%>

packages/@vue/cli-service/generator/template/src/components/HelloWorld.vue

@@ -1,3 +1,4 @@
+<%_ if (!rootOptions.bare) { _%>
 <template>
   <div class="hello">
     <h1>{{ msg }}</h1>
@@ -83,3 +84,4 @@ a
   color #42b983
 </style>
 <%_ } _%>
+<%_ } _%>

packages/@vue/cli/bin/vue.js

@@ -54,6 +54,7 @@ program
   .option('-f, --force', 'Overwrite target directory if it exists')
   .option('-c, --clone', 'Use git clone when fetching remote preset')
   .option('-x, --proxy', 'Use specified proxy when creating project')
+  .option('-b, --bare', 'Scaffold project without beginner instructions')
   .action((name, cmd) => {
     const options = cleanArgs(cmd)
     // --no-git makes commander to default git to true

packages/@vue/cli/lib/Creator.js

@@ -87,6 +87,7 @@ module.exports = class Creator extends EventEmitter {
     preset = cloneDeep(preset)
     // inject core service
     preset.plugins['@vue/cli-service'] = Object.assign({
+      bare: cliOptions.bare,
       projectName: name
     }, preset)
 

packages/@vue/cli/lib/options.js

@@ -8,6 +8,7 @@ const { createSchema, validate } = require('@vue/cli-shared-utils/lib/validate')
 const rcPath = exports.rcPath = getRcPath('.vuerc')
 
 const presetSchema = createSchema(joi => joi.object().keys({
+  bare: joi.boolean(),
   useConfigFiles: joi.boolean(),
   router: joi.boolean(),
   routerHistoryMode: joi.boolean(),