Add deprecation notice to Yeoman package

Author: SteveSandersonMS

templates/package-builder/src/yeoman/.gitignore

@@ -0,0 +1 @@
+/node_modules

templates/package-builder/src/yeoman/README.md

@@ -1,4 +1,4 @@
-# Please use "dotnet new" templates instead
+## Please use "dotnet new" templates instead
 
 As of .NET Core 2.0, it's no longer necessary to use Yeoman to create new Single-Page Application projects.
 
@@ -10,6 +10,6 @@ Using the .NET Core 2.0 SDK, you can run any of the following commands in an emp
 
 Or, if you want to create an Aurelia, Knockout, or Vue application, you should run `dotnet new --install Microsoft.AspNetCore.SpaTemplates::*` first. This will add `aurelia`, `knockout`, and `vue` templates to `dotnet new`.
 
-#### This Yeoman generator is DEPRECATED
+### This Yeoman generator is DEPRECATED
 
 Please don't use `generator-aspnetcore-spa` to create new projects. Its output is outdated and no longer maintained. Instead, use `dotnet new` as described above (or if you're on Windows and use Visual Studio, you can just use *File->New Project* to create Angular, React, or React+Redux projects).

templates/package-builder/src/yeoman/app/index.js

@@ -0,0 +1,15 @@
+var Generator = require('yeoman-generator');
+var fs = require('fs');
+var path = require('path');
+var marked = require('marked');
+var TerminalRenderer = require('marked-terminal');
+ 
+marked.setOptions({ renderer: new TerminalRenderer() });
+
+module.exports = class extends Generator {
+    run() {
+        // Just display deprecation notice from README.md
+        const readmePath = path.join(__dirname, '../README.md');
+        console.log(marked(fs.readFileSync(readmePath, 'utf8')));
+    }
+};

templates/package-builder/src/yeoman/package.json

@@ -4,6 +4,10 @@
   "description": "DEPRECATED. Do not use. Use 'dotnet new' to create ASP.NET Core Single-Page Application projects instead.",
   "author": "Microsoft",
   "license": "Apache-2.0",
+  "files": [
+    "app",
+    "README.md"
+  ],
   "keywords": [
     "yeoman-generator"
   ],
@@ -15,5 +19,8 @@
     "url": "https://github.com/aspnet/JavaScriptServices.git"
   },
   "dependencies": {
+    "marked": "^0.3.6",
+    "marked-terminal": "^2.0.0",
+    "yeoman-generator": "^1.0.0"
   }
 }