comment and efficiency

commented code and changed square values for efficiency
Insurance Payout
deer pop simulations

DeerPop_Beth - Using Beth's method with approximations
Merge pull request #11 from lindongzhou/linton_dev

Insurance Payout
Merge pull request #12 from candaceliu/candace_dev

Candace dev
Merge pull request #7 from KellyBlack/dev

Dev
switch to left hand sum