Update README.md

Author: spithash

README.md

@@ -4,4 +4,7 @@ Bulk update all your local git repos from different directories even if they req
 ## Repos with elevated permissions 
 If you have repos in folders that require sudo, add a *true* after the directory name just like my 1st example, it'll ask for sudo pass
 
+### Configuration
+You should change the repo_directories to match yours
+
 ![Git Janitor Demo from linux command line](https://github.com/spithash/trunk/blob/master/git-janitor.png?raw=true)