Update README.md

README.md

@@ -47,7 +47,7 @@ otree_group_name: "otreeusers"
 
 # dict of users for the available otree instances
 otree_users:
-  # linux username
+  # linux username and otree instance name
   otree1:
     # should an existing otree environment be overriden
     override: yes
@@ -67,6 +67,8 @@ otree_users:
     port: 8005
     # python binary used for otree installation
     python_binary_path: "/usr/bin/python3.7"
+    # app git-repository (optional value) 
+    # app_repo: "https://github.com/oTree-org/oTree.git"  
 ```
 
 ### (optional) upload otree project