MDM script correction

I seems to have seen that `caffeinate` is not really stopped, so I added `pkill caffeinate`.

MDM/Installomator update.sh

@@ -10,6 +10,7 @@ what="installomator" # enter the software to install
 caffeinatepid=$!
 caffexit () {
     kill "$caffeinatepid"
+    pkill caffeinate
     exit $1
 }