added all-in-one update script (for use e.g. as a cron job)

updateFromNetmon.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# get all nodes from netmon and update the community files
+git pull
+node ./create_community_files.js
+
+# update the github repository with the new data
+cd ../freifunkfranken-community/
+git pull
+git commit -a -m "updated from netmon"
+git push origin master