you should see a line of output 'remote: updating http://hci.mit.edu from git...'
which means that it's updating the website using what you just pushed.
(In the background, a simple hook script (/afs/csail.mit.edu/proj/hci/git/hooks/post-receive) updates the web folder
(/afs/csail.mit.edu/proj/hci/www/data) whenever anybody pushes to the git repo.)
3. Adding new people with editing rights:
In order to have permission to access the git repo, people will need CSAIL accounts and to be members of the hci group.
Any member of the hci group can add somebody else using this command: