Adds variable domain name.

[rbdr/grita] / views / grito.haml

%h1= @grito.title
= @markdown.to_html
%hr
#sharing
	%input.url{:value => "http://grita.heroku.com/#{@grito.gethash}", :readonly=>true}
	%br
	%img#qrcode{:alt=>"Código QR", :src=>"/qr/#{@grito.gethash}.png"}