added countdown script

countdown

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+DATE=`date -d "June 3" +%j`
+TODAY=`date +%j`
+DAYS=$(($DATE - $TODAY))
+
+case $DAYS in
+  0) echo "It's today! Merry Christmas!";;
+  [0-9]*) echo "$DAYS days remaining";;
+  -[0-9]*) echo "Oops, you missed it";;
+esac