adding check_updates.sh

scripts/subinstallers/check_updates.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+sudo apt-get update
+
+UPDATES=$(sudo apt-get dist-upgrade -s --quiet=2 | grep ^Inst | wc -l)
+
+if [[ "$UPDATES" ~= "0" ]]; then
+    echo "Please run updates: sudo apt-get update && sudo apt-get -y dist-upgrade"
+    exit 1;
+fi