Set upstream branch tracking for git pull and push

start.sh

@@ -71,6 +71,7 @@ function create {
       # Push to remote git repository
       if [[ -n ${L3D_GIT_REMOTE} ]]; then
         git remote add origin "$L3D_GIT_REMOTE"
+        git branch --set-upstream-to=origin/master master
         git pull
         git push
       fi