Why:
* The guard-yard gem doesn't seem to work so well anymore. In fact, the
problem is with `yard server` -- it doesn't seem to use our custom
template files.
To satisfy the above:
* Instead of using Guard and guard-yard, use the fssm gem to manually
watch various files.
* Instead of using `yard server`, run `yard doc`, which *does* honor our
custom template files.
* You can run `rake autogenerate_docs` to make this happen; update the
README accordingly.
[ci skip]