app/assets/javascripts/backbone/plugins/link_embed.js.coffee
class Kandan.Plugins.LinkEmbed
@options:
regex: /(^| )(http?[^\s<>]*)/gm
@init: ()->
Kandan.Modifiers.register @options.regex, (message, activity)=>
message = message.replace(@options.regex, '$1<a target="_blank" href="$2">$2</a>')
return message