Added LIB and log4net
Updated problem 3 , TestsProblem3.cs and Problem3.cs;  Added the ability to find the next prime factor after the last known prime factor.
Added test cases and code to implement logging and start the process of finding the prime factors of a number.
Added the necessary formatting and appenders for log4net to do it's job.
Added App.config to add functionality for log4net to work.
Added App.config to add log4net functionality.
Edited Programs.cs, Problem3.cs, and TestsProblem3.cs to solve for Problem 3 on Project Euler