Add helpful scripts for timing stuff

scripts/bin/countdown

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+d=$((`date +%s` + $1));
+echo "Countdown started $(date)"
+
+while [ "$d" -ge $(date +%s) ]; do 
+	_dt=$(($d - `date +%s`))
+	days=$((_dt / 86400))
+	echo -ne "\r${days}d $(date -u --date @$((_dt)) +%H:%M:%S) "; 
+	sleep 0.1
+done
+
+echo -ne "\rCountdown finished $(date)\n"

scripts/bin/sw

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+d="$(date +%s)"
+echo "Stopwatch started $(date)"
+
+while true; do
+	_dt=$((`date +%s` - d))
+	days=$((_dt / 86400))
+	echo -ne "\r${days}d $(date -u --date @$((_dt)) +%H:%M:%S) "
+	sleep 0.1
+done