Support for mobile.twitter?

[corleoner]

Just noticed today that links posted from https://mobile.twitter.com/ don't embed.
...also noticed youtu.be doesn't embed as well, but there was already an issue posted on that one so I figured I'd point out the twitter one just in case it was overlooked.

Thanks for the great work, finally got this figured out on my phpbb forum and it's working awesome, very happy to have it!