Other Authentication Methods

[aus]

First of all, great work! I am really glad to see this project. Unfortunately, it's unusable for me at this time because my environment blocks any Google Plus URLs. And therefore, I can't authenticate with the relay. Given the nature of this tool, I suspect many other users are in similar environments where social media sites are blocked. It would be really great to see nassh-relay stand on it's own.

Might I suggest adding other authentication methods such as:

• Other OAuth (non-social media) providers
• HTTP Basic (with HTTPS of course)
• HTTP Digest
• A simple login form