Add program committee invitation.
Merge pull request #20 from thewtex/pc_invitation

Add program committee invitation.
PC invitation tweaks.
Merge branch 'pc_invitation'
Added code of conduct and diversity statement.
added list
updated code of conduct and diversity statement based on @katyhuff's suggestions.
Added Andy's phone number
Added Majken phone number.
added jonathan's phone number
PyCon -> SciPy
renamed short, long -> overview, details
Merge pull request #21 from scopatz/master

Code of Conduct and Diversity Statements
Contacted johnny lin. Moved that entry into the 'sent' list.
annc from md
Merge branch 'master' of github.com:scipy/scipy-conference
Sent announcement to the Galaxy and Biopython lists.