README.rst is now a standard

--HG--
branch : distribute
extra : rebase_source : 261a30d0a7ec63b1ff4918d7906476a19945b288

setuptools/command/sdist.py

@@ -155,7 +155,7 @@ class sdist(_sdist):
                 dist_files.append(data)
 
     def add_defaults(self):
-        standards = [('README', 'README.txt'),
+        standards = [('README', 'README.rst', 'README.txt'),
                      self.distribution.script_name]
         for fn in standards:
             if isinstance(fn, tuple):