Fix features list indent in README.rst.

Fix list from triggering wrong formatting.
Merge pull request #264 from tony/patch-1

Fix features list indent in README.rst.
Add @tony to contributors
Add @tony to contributors
Added libmemcached in Mac OSX section & troubleshooting.rst file changed
Merge pull request #265 from kulbir/develop

Added libmemcached in Mac OSX section & troubleshooting.rst file changed