Rename to django-mailmate

Somebody recently took django-emailtools on PyPI. We sat on this for too
long.
Add gitignore
Add testing support
Use string for version; call this 1.0.0
Remove "backend" (singular) module
Add "lint" command
Lint
Remove extra, empty license file
Add manifest template
Merge pull request #10 from hzdg/mailmate

Rename project to django-mailmate