If you moved away and back to these faces, you'd lose the indicator. Not that the indicator here
seems very valuable, since it's not displayed on simple_clock_face, but at least
this makes things more consistent.
* Make countdown face reset to 0
It was annoying to have countdowns less than DEFAULT_MINUTES.
Admittedly, this does make DEFAULT_MINUTES fairly useless, since
we only ever see it the first time...
* Undo accidental change to movement_config.h
Makefile != bourne shell, I think.
At least on my systems, this was causing a raw -j, which meant
that make had no restriction on its parallelism
(i.e. tried to build everything at once).
I know this is mostly going to be in the website, but I was initially
confused about how to get things going, and it seemed worth
having some simple 'getting started' here.