20141202

December Release 2014:

  • add OmniMarkerPreviewer
  • add twitter account info
  • Remove obsolete Deliverance/XDV docs [it is in Plone 3 now]
  • remove conf.py, it lives in papyrus now
  • update README.rst advice to deal with pypi
  • add in contributing link to trello and community.plone.org