Preliminary release for Dec 2015 short course

Windows binaries are attached to this release. To install on a Mac or a linux machine, do

install.packages("devtools")
library(devtools)
install_github("markmfredrickson/optmatchExperimental", ref="dec2015shortcourse@master")

(I'm not totally sure about that ref argument, not having tested it as I write this. If you leave it out, you'll get whatever version of optmatchExperimental that's current when you run the command, as opposed to this specific release.)