Update versions and option in README (#1463)
Update versions and option in README (#1463)

Postgres versions had been updated and `custom_bootstrap_complation` had
been added in the 'Usage' section.
luzfcb/cookiecutter-django,trungdong/cookiecutter-django,trungdong/cookiecutter-django,luzfcb/cookiecutter-django,ddiazpinto/cookiecutter-django,topwebmaster/cookiecutter-django,mistalaba/cookiecutter-django,trungdong/cookiecutter-django,topwebmaster/cookiecutter-django,ddiazpinto/cookiecutter-django,luzfcb/cookiecutter-django,pydanny/cookiecutter-django,topwebmaster/cookiecutter-django,Parbhat/cookiecutter-django-foundation,ad-m/cookiecutter-django,ad-m/cookiecutter-django,Parbhat/cookiecutter-django-foundation,trungdong/cookiecutter-django,ryankanno/cookiecutter-django,mistalaba/cookiecutter-django,mistalaba/cookiecutter-django,ryankanno/cookiecutter-django,pydanny/cookiecutter-django,ryankanno/cookiecutter-django,ad-m/cookiecutter-django,ddiazpinto/cookiecutter-django,topwebmaster/cookiecutter-django,Parbhat/cookiecutter-django-foundation,ryankanno/cookiecutter-django,ddiazpinto/cookiecutter-django,mistalaba/cookiecutter-django,pydanny/cookiecutter-django,luzfcb/cookiecutter-django,pydanny/cookiecutter-django,Parbhat/cookiecutter-django-foundation,ad-m/cookiecutter-django