Merge pull request #5 from KellyBlack/master

Added a copyright notice to the readme file.
R simulation update
R simulation update
Merge pull request #9 from KellyBlack/dev

Dev
Simulation update
Merge remote-tracking branch 'origin' into linton_dev
Clean files from the merge off of github
Merge pull request #28 from lindongzhou/linton_dev

Linton dev