added description how to update from skeleton

readme.md

@@ -47,24 +47,39 @@ here is a list of assembled components
 
 # Setup
 
-* clone repository
+clone repository
 
     git clone git@github.com:deck/flask-gae-skeleton.git <project_name>
 
-* fetch all the submodules via:
+fetch all the submodules via
 
     git submodule update --init
 
-* set your own appengine application id in app.yaml
-* change the 'secret_key' in settings.py
+set your own appengine application id in app.yaml
 
-* add replace remote
+change the 'secret_key' in settings.py
+
+add replace remote
 
     git remote rm origin
     git remote add origin <new_remote like git@github.com:your_name/project_name.git>
     git commit -am "initial setup"
     git push origin master
 
+# Update from Skeleton
+
+Add the remote and merge in all changes and removes the old stuff again.
+
+    git remote add skeleton git@github.com:deck/flask-gae-skeleton.git
+    git pull skeleton
+    git checkout -b skeleton remotes/skeleton/master
+    git rebase <your_development_branch like master>
+    git checkout <your_development_branch like master>
+    git merge --no-ff skeleton
+    git branch -D skeleton
+    git remote rm skeleton
+    git submodule update
+
 # Usage
 
 ## Run Application