Final Exam Simulation

I have changed the grmEstimation.py file to use the coefficients from the optimization routine in the Simulation and created a new file, SimulateRslt.py, that uses the simulation approach as described in "Issues in the Economics and Econometrics of Policy Evalution" paper to calculate and print the average treatment effects. 
This file includes the code to parallelize the simulation in more than one node, however, I commented it out because I had some issues when I tried running it so I wanted to make sure it runs even if without the parallelization. 

Brenda