Fixed bug with Message parsing causing suffixes to include colon prefix.

examples/simple.rs

@@ -21,6 +21,6 @@ fn main() {
     let server = IrcServer::from_config(config).unwrap();
     identify(&server).unwrap();
     for message in server.iter() {
-        println!("{}", message)
+        println!("{}", message.into_string())
     }
 }

src/data/message.rs

@@ -64,7 +64,7 @@ impl FromStr for Message {
             None
         };
         let suffix = if state.contains(":") {
-            let suffix = state.find(':').map(|i| state[i..state.len()-1]);
+            let suffix = state.find(':').map(|i| state[i+1..state.len()-1]);
             state = state.find(':').map_or("", |i| state[..i]);
             suffix
         } else {