Display message box while GIT is doing stuff

Script functionality is fine. I have imported a new project that was
created with the script and did some local changes. The push then took
care of the vhsot side and update the repo:

$ git push
git@5.0.22.145's password:
Counting objects: 11, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (6/6), done.
Writing objects: 100% (6/6), 544 bytes, done.
Total 6 (delta 5), reused 0 (delta 0)
remote:
remote: **** Pulling changes into Live [Hub's post-update hook]
remote:
remote: From /home/andy/repos/projects/genesis_test11
remote:  * branch            master     -> FETCH_HEAD
remote: Updating af3b478..53a40b5
remote: Fast-forward
remote:  .gitignore            |    2 ++
remote:  www/themes/README.txt |    1 +
remote:  2 files changed, 3 insertions(+)
To ssh://git@5.0.22.145/home/andy/repos/projects/genesis_test11
af3b478..53a40b5  master -> master