Modify setup page for our workshop

setup.md

@@ -4,15 +4,10 @@ title: Setup
 permalink: /setup/
 ---
 
-Please see [this section of the workshop template][workshop-setup]
+Please see [the workshop information page][workshop-setup]
 for instructions on installing Git.
 
-We'll do our work in the `Desktop` folder so make sure you change your working directory to it with:
+You will also need a [GitHub account][github], so please create one before arriving.
 
-~~~
-$ cd
-$ cd Desktop
-~~~
-{: .bash}
-
-[workshop-setup]: https://swcarpentry.github.io/workshop-template/#git
+[workshop-setup]: https://biologyguy.github.io/2017-05-08-NIH/#setup
+[github]: https://github.com/