add smooth scroll

Author: ShMcK

_includes/scripts.html

@@ -11,5 +11,6 @@
 <script src="{{ " /js/modals.min.js " | prepend: site.baseurl }}"></script>
 <script src="{{ " /js/lib/png2gif.min.js " | prepend: site.baseurl }}"></script>
 <script src="{{ " /js/lib/jquery.lazyload.min.js " | prepend: site.baseurl }}"></script>
+<script src="{{ " /js/lib/jquery.smoothscroll.min.js " | prepend: site.baseurl }}"></script>
 <script>!function(e,t,a,n,c,s,o){e.GoogleAnalyticsObject=c,e[c]=e[c]||function(){(e[c].q=e[c].q||[]).push(arguments)},e[c].l=1*new Date,s=t.createElement(a),o=t.getElementsByTagName(a)[0],s.async=1,s.src=n,o.parentNode.insertBefore(s,o)}(window,document,"script","https://www.google-analytics.com/analytics.js","ga"),ga("create","UA-44377274-8","auto"),ga("send","pageview");
 </script>

_includes/table-of-contents.html

@@ -1,3 +1,3 @@
-<a href="#{{ include.link }}">
+<a href="#{{ include.link }}" class="smooth">
   <h5>{{include.index}}. {{ include.title }}</h5>
 </a>

js/lib/jquery.smoothscroll.min.js

@@ -24,17 +24,13 @@ $(function() {
   });
 
   // smooth scroll
-  $('a[href*="#"]:not([href="#"])').click(function() {
-    if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
-      var target = $(this.hash);
-      target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
-      if (target.length) {
-        $('html, body').animate({
-          scrollTop: target.offset().top
-        }, 1000);
-        return false;
-      }
-    }
+  $('a.smooth').smoothScroll({
+    offset: -70,
+    direction: 'top',
+    easing: 'swing',
+    speed: 400,
+    autoCoefficient: 2,
+    preventDefault: true
   });
 
 });