Create smooth-scroll.js

For in-browser smooth scrolling.

// SmoothScroll v0.9.9
// Licensed under the terms of the MIT license.

// People involved
// - Balazs Galambosi: maintainer (CHANGELOG.txt)
// - Patrick Brunner (patrickb1991@gmail.com)
// - Michael Herf: ssc_pulse Algorithm

// Found at and example: http://clickmail.com/who-we-are/awards (6/18/2014)