smoothScroll

Angular resources for anchor smooth scrolling

     * Scroll to new hash value with changed location hash otherwise,
     * if hash value is not changed, anchorScroll to the given hash.
     * This service facilitated with two scrolling methods:
     *      1. scrollTo: scroll to hash value without transition.
     *      2. smoothScrollTo: scroll to hash value with smooth transition.
     *

Demo link: http://codepen.io/nimish-mehta/pen/raMjrG?editors=101