Update README
Update README

It had fallen out of the sync in a number of ways. We also stop
pretending that we have a testsuite.

kirbyfan64/breathe,RR2DO2/breathe,AnthonyTruchet/breathe,kirbyfan64/breathe,RR2DO2/breathe,AnthonyTruchet/breathe,kirbyfan64/breathe,kirbyfan64/breathe,AnthonyTruchet/breathe,AnthonyTruchet/breathe