path
path=c:\rtools\bin;%path%;c:\windows\system32
where make
make -v
g++ -v
where g++
git submodule init
git submodule update 
cd stan
git fetch
git checkout origin/develop
cd .. 
git submodule status
cd rstan
make clean
make install_pre_rpkg
make check && (cd tests & R -q -f runRunitTests.R --args ../rstan.Rcheck)
