a material-design-inspired countdown timer
- Moments.js: https://github.com/moment/moment/
- Waves.js: https://github.com/fians/Waves/
- Font Awesome: https://github.com/FortAwesome/Font-Awesome/
- Animate.css: https://github.com/daneden/animate.css/
- Particles.js: https://github.com/VincentGarreau/particles.js/
- alert sound: http://www.freesfx.co.uk/
- background: https://dribbble.com/RoundedHexagon/