Added RangeTouch, updated Shr lib in demo

src/js/controls.js

@@ -3,6 +3,7 @@
 // TODO: This needs to be split into smaller files and cleaned up
 // ==========================================================================
 
+import RangeTouch from 'rangetouch';
 import captions from './captions';
 import html5 from './html5';
 import support from './support';
@@ -334,6 +335,9 @@ const controls = {
         // Set the fill for webkit now
         controls.updateRangeFill.call(this, input);
 
+        // Improve support on touch devices
+        RangeTouch.setup(input);
+
         return input;
     },