Added a multithreaded example, and added comments to examples.

examples/simple_ssl.rs

@@ -21,6 +21,7 @@ fn main() {
         options: HashMap::new(),
     };
     let irc_server = IrcServer::from_config(config).unwrap();
+    // The wrapper provides us with methods like send_privmsg(...) and identify(...)
     let server = Wrapper::new(&irc_server);
     server.identify().unwrap();
     for message in server.iter() {