Revert "Wibble."

This reverts commit e7ca132466e3c2e71f7c8fdb2b96ec87c24353be.
Revert "Make sure README.md mentions that make can build in parallel."

This reverts commit 0b72347dc468ba081d67385a077238bcaa9eb4d5.
Make sure README.md mentions that make can build in parallel.

Signed-off-by: Austin Seipp <aseipp@pobox.com>