Merge pull request #531 from richmccue/gh-pages

Issue #507 - Episode 14 - Added guidance for RStudio users when Git.exe path not pre-filled

Author: munkm

_episodes/14-supplemental-rstudio.md

@@ -37,9 +37,29 @@ our computer, we choose the option "Existing Directory":
 > option on this menu. That is what you would click on if you wanted to
 > create a project on your computer by cloning a repository from GitHub.
 > If that option is not present, it probably means that RStudio doesn't know
-> where your Git executable is. See
-> [this page](https://stat545-ubc.github.io/git03_rstudio-meet-git.html)
-> for some debugging advice. Even if you have Git installed, you may need
+> where your Git executable is, and you won't be able to progress further
+> in this lesson until you tell RStudio where it is.  
+> ### Find your Git Executiable
+> First let's make sure that Git is installed on your computer.
+> Open your shell on Mac or Linux, or on Windows open the command prompt
+> and then type:
+> - `which git` (Mac, Linux)
+> - `where git` (Windows)
+>
+> If there is no version of Git on your computer, please either install [Git](https://git-scm.com/downloads/)
+> or [GitHub](https://desktop.github.com/) now. Next open your shell or command prompt 
+> and type `which git` (Mac, Linux), or `where git` (Windows).
+> Copy the path to the git executable.
+>
+> e.g. On one Windows computer which had GitHub Desktop installed on it, the path was:
+> `C:/Users/UserName/AppData/Local/GitHubDesktop/app-1.1.1/resources/app/git/cmd/git.exe`
+> 
+> NOTE: The path on your computer will be somewhat different.
+> ### Tell RStudio where to find GitHub
+> In RStudio, go to the `Tools` menu > `Global Options` > `Git/SVN` and then
+> browse to the git executable you found in the command prompt or shell. Now restart
+> RStudio.
+> Note: Even if you have Git installed, you may need
 > to accept the XCode license if you are using macOS.
 {: .callout}