Add github.com/gliderlabs/ssh. (#1231)

Go package that wraps the crypto/ssh package with a higher-level API for building SSH servers.

README.md

@@ -713,6 +713,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [portproxy](https://github.com/aybabtme/portproxy) - Simple TCP proxy which adds CORS support to API's which don't support it.
 * [raw](https://github.com/mdlayher/raw) - Package raw enables reading and writing data at the device driver level for a network interface.
 * [sftp](https://github.com/pkg/sftp) - Package sftp implements the SSH File Transfer Protocol as described in https://filezilla-project.org/specs/draft-ietf-secsh-filexfer-02.txt.
+* [ssh](https://github.com/gliderlabs/ssh) - Higher-level API for building SSH servers (wraps crypto/ssh).
 * [sslb](https://github.com/eduardonunesp/sslb) - It's a Super Simples Load Balancer, just a little project to achieve some kind of performance.
 * [tcp_server](https://github.com/firstrow/tcp_server) - A Go library for building tcp servers faster.
 * [utp](https://github.com/anacrolix/utp) - Go uTP micro transport protocol implementation.