Add break countdown and repeat prompt.
Fix prompt format.
Consistently format `for` and `if` statements.
Try to ring terminal bell after break too.
Return to command line after each rep.
Play chime at end of breaks too.  I like to wander.
Updated behavior.
Updated `README`.
`echo "Enter task:"\n read task` -> `read -p "Enter task: " task
Uncomment `take_short_break`.
Rework logic to allow alternate initial task input.
Update `README`.
Fix initial input conditional.
Change to `#!/bin/bash` script.
Combine chime set and play functions; remove some comments.