Updated the readme.
modified the readme.
Created initial simulation directories.

data, matlab, R
Added Midterm Presentation Files
Merge pull request #1 from lindongzhou/linton_dev

Linton dev
Merge pull request #2 from sweenee/beth_dev

Merge the directory structure for the program files
Merge pull request #1 from KellyBlack/dev

Dev
Merge pull request #1 from KellyBlack/dev

Dev
Merge pull request #1 from KellyBlack/dev

Bringing repository up to date
Created initial simulation directories.

data, matlab, R
Added Midterm Presentation Files
Beth's first change to matlab
Candace's first change
Linton's change
Merge pull request #3 from candaceliu/candace_dev

Candace dev
Merge pull request #5 from sweenee/beth_dev

Beth's first changes
Added Lionton's changes
Merge pull request #2 from KellyBlack/dev

update bethdev
Merge pull request #2 from KellyBlack/dev

Update candace_dev from dev
first version of matlab function for Z and X