Added everyone whose changes I merged in to CONTRIBUTORS.
Added everyone whose changes I merged in to CONTRIBUTORS.

ixc/django-oembed,JordanReiter/django-oembed,ixc/django-oembed,JordanReiter/django-oembed,emacsway/django-oembed,DrMeers/django-oembed,DrMeers/django-oembed