Avoid Scrollme execution on touchable devices

Load Modernizr to avoid the execution of Scrollme on touchable devices

There are no stable workarounds to subsane iOS DOM-freeze on scrolling events, it's better to avoid parallax effects with this render stopper.

Waiting for jQuery workaround (http://api.jquerymobile.com/scrollstart/)
>> Note that iOS devices freeze DOM manipulation during scroll, queuing them to apply when the scroll finishes. We're currently investigating ways to allow DOM manipulations to apply before a scroll starts.