Describe use of GitHub issues in README.md.
Bug 1112653 - Part 1: rename Account -> Profile, start to tease apart local and remote.
Bug 1112653 - Part 2: rework local name/prefixing in prefs.
Bug 1112653 - Part 3: eliminate TestAccount in favor of MockAccountProfile.

This comments out a little chunk of code. We can fix that up later.