improve README

Author: problame

Diff for: README.md

@@ -1 +1,11 @@
+[![Build Status](https://travis-ci.org/problame/go-netssh.svg?branch=master)](https://travis-ci.org/problame/go-netssh)
+
+Package netssh provides `net.Conn` and `net.Listener` that uses the ssh binary + `authorized_keys` file as a transport.
+
+## API documentation
+
 See `example/` and https://godoc.org/github.com/problame/go-netssh
+
+## License
+
+See LICENSE file.