update references to have allow_update_branch (#560)

* Update README.md

Update README.md to add allow_update_branch

* Update settings.yml

* Update suborg.yml

README.md

@@ -361,7 +361,12 @@ repository:
   # Either `true` to allow automatically deleting head branches 
   # when pull requests are merged, or `false` to prevent automatic deletion.
   # Default: `false`
-  delete_branch_on_merge: true  
+  delete_branch_on_merge: true
+
+  # Either `true` to  allow update branch on pull requests, 
+  # or `false` to disallow update branch.
+  # Default: `false`
+  allow_update_branch: true  
 
   # Whether to archive this repository. false will unarchive a previously archived repository.
   archived: false

docs/sample-settings/settings.yml

@@ -81,7 +81,12 @@
   # Either `true` to allow automatically deleting head branches 
   # when pull requests are merged, or `false` to prevent automatic deletion.
   # Default: `false`
-  #delete_branch_on_merge: true  
+  #delete_branch_on_merge: true 
+
+  # Either `true` to  allow update branch on pull requests, 
+  # or `false` to disallow update branch.
+  # Default: `false`
+  # allow_update_branch: true 
 
 # The following attributes are applied to any repo within the org
 # So if a repo is not listed above is created or edited

docs/sample-settings/suborg.yml

@@ -83,7 +83,12 @@ suborgteams:
   # Either `true` to allow automatically deleting head branches 
   # when pull requests are merged, or `false` to prevent automatic deletion.
   # Default: `false`
-  #delete_branch_on_merge: true  
+  #delete_branch_on_merge: true 
+
+  # Either `true` to  allow update branch on pull requests, 
+  # or `false` to disallow update branch.
+  # Default: `false`
+  # allow_update_branch: true 
 
 # The following attributes are applied to any repo within the org
 # So if a repo is not listed above is created or edited