Update to uClimate.com

To coincide with #COP21, I’ve added a tweet button to uClimate.com (which includes the #cop21 hashtag). So please get tweeting.
I’ve also, taken the chance to undertake a few other changes which I’ve been planning to the layout of uClimate.com also hopefully to speed up the site as well as a new mobile version intended to make it easier to view on small screen devices.