Adds some ideas to README.rst.
Adds some ideas to README.rst.

GetAmbassador/django-cachalot,BertrandBordage/django-cachalot,GetAmbassador/django-cachalot,pombredanne/django-cachalot,BertrandBordage/django-cachalot,dan-passaro/django-cachalot,dan-passaro/django-cachalot,pombredanne/django-cachalot