Update Makefile.
Update Makefile.

Add commands for certificate manipulation:
- upload-cert
- list-cert

Add utility command to list hosted zone ID: hosted-zone

Change getdns command to dns command. Add newline in command at each pip
for clarity.

Fix name of content directory in sync command.

Replace all instances of $DOMAIN env var with Jinja2 template vars.

jambonsw/cookiecutter-static-site