Added a GUI box for the tree traversal functions in the FibonacciCamera. While the ability to traverse
the tree still exists with key presses, this new GUI makes it clear to the user that traversal is possible. The
hotkeys are also clearly stated in the new GUI box if they don't want to press the buttons. Changes:
-Added OnGUI event handler to the FibonacciCamera script for the traversal GUI.
-Traversal GUI follows similar formatting to the previous GUI for tree generation in that it has feedback
in the form of short sentences at the bottom of the GUI box.
-Added string member for the current feedback message being displayed like I did for FibonacciTree.