Add the authormap used by hg-git to fix people without valid email addresses.
Merged.
Testing pushing to github first, then pulling into mercurial.
Copy and convert ReadMe.rtf to README.md, because Github wants it.

--HG--
extra : rebase_source : ccb7a50d519730af35425cc41a84fdc360687da1
Fix a typo in authors.txt, pointed out by boredzo.
Test. Hoping mercurial-server doesn't throw exceptions anymore...
Another test.
Yet another test.
And again.
Still getting an exception with trac's hook.
Test again.
And again.
Update README.md on github.