Add a .resizable class for faster prototyping

Created by: boast

.resizable {
    resize: both;
    overflow: auto;
}

It's a really handy and I used it a lot in other projects. All newer Major Browsers support this. Just stumbled over it again by a twitter post from smashingmagazine: http://twitter.com/#!/smashingmag/status/129273609305866240