Hello,
I do the following commands to sync the file in GitHub. (only on MAC)
1. git status
2. git remote -v
3. git remote add upsteam (your GitHub fork from the bootcamp)
4. git remote -v (check, if the step 3 is success, you should see origin and upstream)
5. git fetch origin (downloading all the files in origin)
6. git merge upstream/master (after this step, you should get the updated doc)
If you have more problem, google is your best friend.
Enjoy the Camp.