Update clone repo command and directory name
Update clone repo command and directory name

- looks like the repo URL was changed but not the command. 
- A directory name was updated
- added --single-branch flag so that anyone can clone a single repo. "Master" in this case. It reduces cloning time significantly.
opensourcedesign/opensourcedesign.github.io,opensourcedesign/opensourcedesign.github.io,opensourcedesign/opensourcedesign.github.io