Getting code on Windows

In the read me, it has this:

git clone https://github.com/google/shaderc $SOURCE_DIR
cd $SOURCE_DIR
./utils/git-sync-deps
cd $SOURCE_DIR/

The ./utils/git-sync-deps part is nonsensical on a windows cmd prompt. You get:
'.' is not recognized as an internal or external command,
operable program or batch file.

Also, if you go to the Appveyor link there and select a job, then the Artifacts tab it says "The build job does not contain any artifacts."