title: Allow users to embed tweets using only URL
body: <p>I would like to give users the option to post tweets by entering only the url of the tweet (i.e. they would paste <a href="https://twitter.com/inspiredmag/status/342771390283411456" rel="nofollow">https://twitter.com/inspiredmag/status/342771390283411456</a> and then the actual tweet embed code, once received will be saved into the database to be displayed later). I'm not too familiar with the twitter api. i assume that once the user enters the url and clicks submit i will be able to get the embed code and then save it. is there a way I can grab it before submit and show a preview to the user?</p>