Update readme. (#568)

README.md

@@ -5,15 +5,7 @@ Transport-agnostic `core` and transport servers for `http`, `ipc`, `websockets`
 
 **New!** Support for [clients](#Client-support).
 
-[![Build Status][travis-image]][travis-url]
-[![Build Status][appveyor-image]][appveyor-url]
-
-[travis-image]: https://travis-ci.org/paritytech/jsonrpc.svg?branch=master
-[travis-url]: https://travis-ci.org/paritytech/jsonrpc
-[appveyor-image]: https://ci.appveyor.com/api/projects/status/github/paritytech/jsonrpc?svg=true
-[appveyor-url]: https://ci.appveyor.com/project/paritytech/jsonrpc/branch/master
-
-[Documentation](http://paritytech.github.io/jsonrpc/)
+[Documentation](https://docs.rs/jsonrpc-core/)
 
 ## Sub-projects
 - [jsonrpc-core](./core) [![crates.io][core-image]][core-url]