Readme change (#3824)

Adding a list of chapters to help track tests as they either migrate from old-tests, or if we create new tests. Putting this in 'old-tests' because that seems like a good spot to start when creating tests.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/3824

Received on Monday, 26 September 2016 16:33:54 UTC