DrawJong update

Some new features come to DrawJong:

• Gesture Control Update! Now DrawJong is more fun to perform with.
• Added touch screen gesture controls:
• One-finger swipe controls Coefficients A (x-axis) and B (y-axis).
• Two-finger swipe controls Coefficients C (x-axis) and D (y-axis).
• Pinch to scale figure size.
• Double tap with one finger to randomize the background color.
• Double tap with two fingers to randomize the particle colors.
• Added switch to enable/disable gesture controls.
• Added waveform coloration switch. If enabled, waveforms will have the save color as the particles.
• Updated Manual