finished the prime number calculation method, added an example of it
calculating the max int number. stresses cpu usage to 100%, not heavy
yet. But we are stressing it in someway. next steps are to add
multithreading and different ways of performance measurments.
still not there yet, haven't figured out the functional programming
style of scala + have to find a way to make calculating primes a bit
heavier on the ALU, and stress the branch predictor aswell. Still
figuring stuff out.
