More work

src/frame/unknown.rs

@@ -1,4 +1,4 @@
-use frame::{Head, Error};
+use frame::{Frame, Head, Error};
 use bytes::{Bytes, BytesMut, BufMut};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -25,3 +25,9 @@ impl Unknown {
         Ok(())
     }
 }
+
+impl From<Unknown> for Frame {
+    fn from(src: Unknown) -> Frame {
+        Frame::Unknown(src)
+    }
+}