Create screen cronometer.
Adds the SDL_ttf linker setting
Inscreases initial delay to 10 sec
Allow 2 digits cronometer.
Merge pull request #32 from fabiokr/cron

Create screen cronometer.
Revert "Normalizes includes"

This reverts commit 98a21e92c07104637b13ea7b65a4025c0b66bbf8.