Updates to README.md.
Updates to README.md.

humdrum-tools/minHumdrum,craigsapp/minHumdrum,craigsapp/minHumdrum,humdrum-tools/minHumdrum,humdrum-tools/minHumdrum,craigsapp/humlib,craigsapp/minHumdrum,craigsapp/humlib,craigsapp/humlib