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*  Name      :  Tobby Lie
*  Student ID:  103385744
*  Class     :  CSCI 4565
*  HW#       :  2
*  Due Date  :  February 18, 2020
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*  File organization:
*    5744HW2:
*       main.cpp - All functions for
*           program contained within this file.
*       5744HW2.xcodeproj - Xcode project file
*           that can run program.
*  Functional organization:
*       frame_buffer_coordinates - Gets frame buffer
*           width and height in tuple form.
*       keyboard - Handles logic keyboard input.
*       display - Handles logic for display callback.
*       reshape - Handles logic for reshaping window.
*       init - Handles initialization.
*  Controls:
*       s - Shoulder counter clockwise rotation
*       S - Shoulder clockwise rotation
*       e - Elbow counter clockwise rotation
*       E - Elbow clockwise rotation
*       h - Hand (wrist) counter clockwise rotation
*       H - Hand (wrist) clockwise rotation
*       1 - First digit rotate towards palm
*       ! - First digit rotate away from palm
*       2 - Second digit rotate towards palm
*       @ - Second digit rotate away from palm
*       3 - Third digit rotate towards palm
*       # - Third digit rotate away from palm
*       4 - Thumb rotate towards palm
*       $ - Thumb rotate away from palm
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*  Status of program:
*       Compiles and runs. Works completely.
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*   Hardware platform:
*       Tested on Macbook Pro 2019 in Xcode.
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