add libcurl link

README.md

@@ -18,7 +18,7 @@ See also http://arewewebyet.com/
     * [chris-morgan/rust-http](https://github.com/chris-morgan/rust-http): superceeded by Teepee  [<img src="https://travis-ci.org/chris-morgan/rust-http.png?branch=master">](https://travis-ci.org/chris-morgan/rust-http)
     * [teepee/teepee](https://github.com/teepee/teepee) [<img src="https://travis-ci.org/teepee/teepee.png?branch=master">](https://travis-ci.org/teepee/teepee)
   * client
-    * [carllerche/curl-rust](https://github.com/carllerche/curl-rust): libcurl bindings
+    * [carllerche/curl-rust](https://github.com/carllerche/curl-rust): bindings for [libcurl](http://curl.haxx.se/libcurl/)
   * server
     * [erickt/rust-mongrel2](https://github.com/erickt/rust-mongrel2): bindings for the [Mongrel2](http://mongrel2.org) webserver
     * [iron/iron](https://github.com/iron/iron): inspired by Express.js, which is inspired by Sinatra.