created Riak CS v. Swift comparison page/section
Update source/riakcs/references/appendices/comparisons/Riak Compared to Swift.md
Merge branch 'riakcs-swift-sb' of github.com:basho/basho_docs into riakcs-swift-sb
Renamed to valid file, cleaned up nav
Merge pull request #146 from basho/riakcs-swift-sb

created Riak CS v. Swift comparison page/section