chore: parameterize Node.js 22 in .node-version file

Author: MikeMcC399

.github/workflows/main.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version-file: .node-version
       - name: Cypress Component Tests
         uses: cypress-io/github-action@v6
         with:

.node-version

@@ -0,0 +1 @@
+22

readme.md

@@ -4,6 +4,11 @@ This repo contains several examples of the
 [Cypress Component Testing Getting Started app](https://docs.cypress.io/guides/component-testing/writing-your-first-component-test)
 in various frameworks and libraries.
 
-To get started with an example, clone the repo, go into the desired directory,
-and `npm install`, and then run the application as you normally would for that
-framework (see the folders readme file).
+To get started with an example, first clone the repo.
+
+Use the recommended version of [Node.js](https://nodejs.org/en/) as shown by the file [.node-version](./.node-version) contents.
+The repo [node-version-usage](https://github.com/shadowspawn/node-version-usage) contains a list of Node.js version managers that read and use the contents of a [.node-version](./.node-version) file to install and use the specified version.
+
+Go into the desired directory, execute `npm install`,
+and then run the application as you normally would for that
+framework (see the folder's readme file).