README: Rename with .md extension.

Otherwise, it doesn't get recognized by GitHub's parser as being formatted
in markdown.

Signed-off-by: Rogério Brito <rbrito@ime.usp.br>
This commit is contained in:
Rogério Brito 2015-06-27 23:53:28 -03:00
parent 2f912fd69b
commit df962b3ffe