Add Twitter Cards Metadata
Summary
Similar in concept to #54 (closed) except twitter is rude and uses their own system. Add their metadata in base.html and test.
Resources
- http://gethead.info/#twitter
- https://dev.twitter.com/cards/overview
- may need to follow the same concept as #54 (closed) to test twitter card metadata extraction
Twitter's bot needs to be whitelisted?
See if we can fetch the actual url's twitter data and give that back to twitter when we detect that it's a bot.
