docs(cli): recommend using npx @mermaidchart/cli

Recommend using [npx][] to automatically install, cache, and run
@mermaidchart/cli, e.g. with `npx @mermaidchart/cli`, as npx comes with
most Node.JS installations.

This doesn't currently work since we haven't published this package to
NPM, however.

[npx]: https://docs.npmjs.com/cli/v10/commands/npx

Author: aloisklink

packages/cli/README.md

@@ -2,16 +2,28 @@
 
 CLI for interacting with https://MermaidChart.com, the platform that makes collaborating with Mermaid diagrams easy!
 
+## Installation
+
+`@mermaidcart/cli` is tested to work with Node.JS v18.18.0 or later.
+
+We recommend installation using [npx](https://docs.npmjs.com/cli/v10/commands/npx)
+to automatically download, cache, and run `@mermaidcart/cli`, as it comes with
+most Node.JS installations.
+
+```bash
+npx @mermaidchart/cli --help
+```
+
 ## Usage
 
 ```bash
-mermaid-chart <command>
+npx @mermaidchart/cli <command>
 ```
 
 Use `--help` to see options!
 
 ```bash
-mermaid-chart --help
+npx @mermaidchart/cli --help
 ```
 
 `@mermaidchart/cli` allows you to easily sync local diagrams with your diagrams
@@ -23,15 +35,15 @@ Firstly, go to https://www.mermaidchart.com/app/user/settings and generate an
 API key, which you can then setup by running:
 
 ```bash
-mermaid-chart login
+npx @mermaidchart/cli login
 ```
 
 ### `link` an existing Mermaid diagram to MermaidChart.com
 
 You can link a local Mermaid diagram to MermaidChart using:
 
 ```bash
-mermaid-chart link ./path/to/my/mermaid-digram.mmd
+npx @mermaidchart/cli link ./path/to/my/mermaid-digram.mmd
 ```
 
 This will add an `id: xxxx-xxxxx-xxxxx` field to your diagram's YAML frontmatter,
@@ -53,7 +65,7 @@ flowchart
 Once you've made some local changes, you can `push` your changes to MermaidChart.com
 
 ```console
-$ mermaid-chart push ./path/to/my/mermaid-digram.mmd
+$ npx @mermaidchart/cli push ./path/to/my/mermaid-digram.mmd
 ✅ - ./path/to/my/mermaid-digram.mmd was pushed
 ```
 
@@ -62,15 +74,15 @@ $ mermaid-chart push ./path/to/my/mermaid-digram.mmd
 You can use `pull` to pull down changes from MermaidChart.com.
 
 ```console
-$ mermaid-chart pull ./path/to/my/mermaid-digram.mmd
+$ npx @mermaidchart/cli pull ./path/to/my/mermaid-digram.mmd
 ✅ - ./path/to/my/mermaid-digram.mmd was updated
 ```
 
 Or use the `--check` flag to throw an error if your local file would have been
 updated:
 
 ```console
-$ mermaid-chart pull ./path/to/my/mermaid-digram.mmd
+$ npx @mermaidchart/cli pull ./path/to/my/mermaid-digram.mmd
 ❌ - ./path/to/my/mermaid-digram.mmd would be updated
 ```