Update Attendee Procedure for incident handling.md

Re-wording of the public-shaming note. Hopefully less "silence"-oriented and heavier on the "what we might get out of it" if we give the community a chance to resolve issues before they hit the internet at large.

Reconfigurations and edits very welcome!
Merge pull request #4 from pythonchelle/master

Reworded the public-shaming note. via pythonchelle