Added item to TODO list.

TODO.txt

@@ -2,6 +2,7 @@ Code:
 - Connect to VTK.
 - Rotation angle is too large and has a 'bump' at 0.
 - tracker.gesture(...) instead of tracker.bind('gesture', ...)
+- Rotation angle and pinch scale are too high.
 
 Thesis:
 - Network protocol.