OneUp is a fully responsive HTML5 Retina enabled One Page WordPress Theme suitable for any kind of creative or business use. Built upon the responsive Twitter Bootstrap framework, the theme is highly optimized for both mobile and desktop platforms. One uses lazy-loading of images and compression of all required scripts, meaning not only will your website look great, but it will also be lightening fast. See below for some of the awesome features included in this theme.
Demo: http://themeforest.net/item/oneup-one-page-parallax-retina-wordpress-theme/5901846