STEPS
1. inputFile.txt -> Set variables for all particles
2. input.csv -> Set x entry point, y entry point, mass and diameter for each particle. Columns must be in that order from left to right
3. SIM.exe -> This will read inputFile.txt and input.csv (up to the first 5000 particles)
4. output.csv -> Displays:
			- calculated x and y landing points
			- calculated x, y and z exit velocities
			- calculated exit angle
		 	- input mass and diameter
			- generated unique particle ID