Updated usage needed for process-git-requests script

[Parag Nemade]

Dear sysadmin-cvs group,
     I have seen after discussing with few members of sysadmin-cvs group 
that they found script process-git-requests[1] is not working for them 
and believe only limb knows how to run it. I see this is not good. We 
should have then new way of using process-git-requests documented 
somewhere. I am not sure if the new way of usage is updated here[2].
     We already have less people working for this group and I guess 
except limb no one gets success with that script. Please update 
somewhere the usage so that when we need, other members can help needed 
people with their branch requests.

Thanks & Regards,
Parag

[1] 
https://git.fedorahosted.org/cgit/fedora-infrastructure.git/plain/scripts...
[2] https://infrastructure.fedoraproject.org/infra/docs/scmadmin.txt