site/README: update.

Author: MikeMcQuaid

_site/README.md

@@ -18,7 +18,9 @@ Once you've found a home for your forked repository, it's yours. You're the owne
 
 ### Install in your local development environment
 
-Once you've found a home for your forked repository, [clone it](https://help.github.com/articles/cloning-a-repository/).
+If you want to manage your website in a local web development environment, you'll be using [Ruby](https://jekyllrb.com/docs/installation/).
+
+Once you've found a home for your forked repository, **[clone it](https://help.github.com/articles/cloning-a-repository/)**.
 
 #### Install Jekyll