Show a title above countdown

Countdown timer and stopwatch for the command-line.
More information: <https://github.com/trehn/termdown>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

termdown {{1m30s}} --title "{{Interesting title}}"

click the source code to copy install termdown on any operating system with command-not-found.com