Upgrade to Angular 13 (#38)

* Upgrade to Angular 13

* Fix variables in edit template

Author: Matt Raible

.github/workflows/nodejs.yml

@@ -8,15 +8,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [12.x, 14.x]
+        node-version: [14, 16]
         app:
           - demo
           - demo-bootstrap
           - demo-material
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v2.5.0
+      uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
     - name: Install latest Chrome

README.md

@@ -12,6 +12,8 @@ Generating CRUD applications with the Angular CLI and Schematics.
 
 ## Tutorial: Getting Started
 
+Follow the steps below to see how this library works, or [watch this screencast](https://www.youtube.com/watch?v=3mqWrmZtefE).
+
 1. Clone this repository.
 
     ```
@@ -135,7 +137,6 @@ Paper Dashboard is the default if you don't specify a `--style` parameter and no
 
 You can fork this repo and extend the generated code using Schematics. Information about how to use Schematics can be found here:
 
-- 📺 [Introduction to Angular CRUD](https://www.youtube.com/watch?v=3mqWrmZtefE)
 - [Generating Custom Code With The Angular CLI And Schematics](https://softwarearchitekt.at/post/2017/10/29/generating-custom-code-with-the-angular-cli-and-schematics.aspx)
 - [Automatically Updating Angular Modules With Schematics And The CLI](https://softwarearchitekt.at/post/2017/12/01/generating-angular-code-with-schematics-part-ii-modifying-ngmodules.aspx)
 - [Use Angular Schematics to Simplify Your Life](https://developer.okta.com/blog/2019/02/13/angular-schematics)