Add rangetouch to enable track seeking on iOS

gulpfile.js

@@ -23,6 +23,7 @@ elixir(function (mix) {
 
     mix.scripts([
             'node_modules/plyr/dist/plyr.js',
+            'node_modules/rangetouch/dist/rangetouch.js',
             'resources/assets/js/libs/modernizr-custom.js'
         ], 'public/js/vendors.js', './')
         .styles([

package.json

@@ -38,6 +38,7 @@
     "nprogress": "^0.2.0",
     "plyr": "^1.5.16",
     "rangeslider.js": "^2.1.1",
+    "rangetouch": "0.0.9",
     "sinon": "^1.17.2",
     "vue": "^1.0.20",
     "vue-clickaway": "^1.1.1",