Merge pull request #38 from aaronsteers/patch-1

Add `choco install graphviz` tip for Windows users

docs/getting-started/installation.md

@@ -5,7 +5,7 @@ title: Installation
 
 It uses [Graphviz](https://www.graphviz.org/) to render the diagram, so you need to [install Graphviz](https://graphviz.gitlab.io/download/) to use **diagrams**. After installing graphviz (or already have it), install the **diagrams**.
 
-> macOS users can download the Graphviz via `brew install graphviz` if you're using [Homebrew](https://brew.sh).
+> macOS users can download the Graphviz via `brew install graphviz` if you're using [Homebrew](https://brew.sh). Similarly, Windows users with [Chocolatey](https://chocolatey.org) installed can run `choco install graphviz`.
 
 ```shell
 # using pip (pip3)