Merge pull request #61 from tabrath/master

Added link to my C# implementation

Author: RichardLitt

README.md

@@ -92,6 +92,7 @@ Yes, but we already have to agree on functions, so this is not hard. The table e
 - [swift-multihash](//github.com/NeoTeo/SwiftMultihash)
 - [ruby-multihash](//github.com/neocities/ruby-multihash)
 - [MultiHash.Net](//github.com/MCGPPeters/MultiHash.Net)
+- [cs-multihash](//github.com/tabrath/cs-multihash)
 - [scala-multihash](//github.com/mediachain/scala-multihash)
 - [php-multihash](//github.com/Fil/php-multihash)