Update SDLvncviewer TODOs

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

TODO

@@ -5,8 +5,8 @@ make SDLvncviewer more versatile
 	- Send modifiers key-up on leave focus,
 	- test for missing keys (especially "[]{}" with ./examples/mac),
 	- map Apple/Linux/Windows keys onto each other,
-	- introduce scrollbars,
 	- handle selection
+	- handle scroll wheel
 style fixes: use Linux' coding guidelines & ANSIfy tightvnc-filetransfer:
 	discuss on list
 LibVNCClient cleanup: prefix with "rfbClient", and make sure it does
@@ -24,6 +24,4 @@ selectbox: scroll bars
 authentification schemes (secure vnc)
 	IO function ptr exists; now explain how to tunnel and implement a
 	client address restriction scheme.
-using Hermes library for fast colour translations.
 VisualNaCro testing
-