Docs: Mention Git in the "Optional" section of "Running from Source" (A…

…rchipelagoMW#1880)

* Docs: Mention Git in the "Optional" section of "Running from Source"

GIt is required to install the Zilliandomizer package.

Also, this is probably just nice to have.

* Remove mention of Zillion so the text doesn't need updating.

* Update docs/running from source.md

Co-authored-by: black-sliver <[email protected]>

* Update docs/running from source.md

Co-authored-by: black-sliver <[email protected]>

* Mention PyCharm's git integration

---------

Co-authored-by: black-sliver <[email protected]>

docs/running from source.md

@@ -69,6 +69,19 @@ It should be dropped as "SNI" into the root folder of the project. Alternatively
 host.yaml at your SNI folder.
 
 
+## Optional: Git
+
+[Git](https://git-scm.com) is required to install some of the packages that Archipelago depends on.
+It may be possible to run Archipelago from source without it, at your own risk.
+
+It is also generally recommended to have Git installed and understand how to use it, especially if you're thinking about contributing.
+
+You can download the latest release of Git at [The downloads page on the Git website](https://git-scm.com/downloads).
+
+Beyond that, there are also graphical interfaces for Git that make it more accessible.
+For repositories on Github (such as this one), [Github Desktop](https://desktop.github.com) is one such option.
+PyCharm has a built-in version control integration that supports Git.
+
 ## Running tests
 
 Run `pip install pytest pytest-subtests`, then use your IDE to run tests or run `pytest` from the source folder.