Replace Grunt tasks with Gulp

_assets/js/_main.js

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+/*! Responsive Menu */
+// http://tympanus.net/codrops/2013/05/08/responsive-retina-ready-menu/
+//  The function to change the class
+var changeClass = function (r,className1,className2) {
+  var regex = new RegExp("(?:^|\\s+)" + className1 + "(?:\\s+|$)");
+  if( regex.test(r.className) ) {
+    r.className = r.className.replace(regex,' '+className2+' ');
+    }
+    else{
+    r.className = r.className.replace(new RegExp("(?:^|\\s+)" + className2 + "(?:\\s+|$)"),' '+className1+' ');
+    }
+    return r.className;
+};
+//  Creating our button in JS for smaller screens
+var menuElements = document.getElementById('site-nav');
+menuElements.insertAdjacentHTML('afterBegin','<button type="button" role="button" id="menutoggle" class="navtoggle navicon-lines-button x" aria-hidden="true"><span class="navicon-lines"></span>menu</button>');
+
+//  Toggle the class on click to show / hide the menu
+document.getElementById('menutoggle').onclick = function() {
+  changeClass(this, 'navtoggle active', 'navtoggle');
+};
+// http://tympanus.net/codrops/2013/05/08/responsive-retina-ready-menu/comment-page-2/#comment-438918
+document.onclick = function(e) {
+  var mobileButton = document.getElementById('menutoggle'),
+    buttonStyle =  mobileButton.currentStyle ? mobileButton.currentStyle.display : getComputedStyle(mobileButton, null).display;
+
+  if(buttonStyle === 'block' && e.target !== mobileButton && new RegExp(' ' + 'active' + ' ').test(' ' + mobileButton.className + ' ')) {
+    changeClass(mobileButton, 'navtoggle active', 'navtoggle');
+  }
+};
+
+/*! Plugin options and other jQuery stuff */
+
+// FitVids options
+$(function() {
+	$("article").fitVids();
+});
+
+// Table of Contents toggle
+$(function() {
+  $(".toc h3").click(function () {
+    $("#drawer").toggleClass("js-hidden");
+  });
+});
+
+// Add lightbox class to all image links
+$("a[href$='.jpg'],a[href$='.jpeg'],a[href$='.JPG'],a[href$='.png'],a[href$='.gif']").addClass("image-popup");
+
+// Magnific-Popup options
+$(document).ready(function() {
+  $('.image-popup').magnificPopup({
+    type: 'image',
+    tLoading: 'Loading image #%curr%...',
+    gallery: {
+      enabled: true,
+      navigateByImgClick: true,
+      preload: [0,1] // Will preload 0 - before current, and 1 after the current image
+    },
+    image: {
+      tError: '<a href="%url%">Image #%curr%</a> could not be loaded.',
+    },
+    removalDelay: 300, // Delay in milliseconds before popup is removed
+    // Class that is added to body when popup is open.
+    // make it unique to apply your CSS animations just to this exact popup
+    mainClass: 'mfp-fade'
+  });
+});

_assets/js/plugins/jquery.fitvids.js

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+/*global jQuery */
+/*jshint browser:true */
+/*!
+* FitVids 1.1
+*
+* Copyright 2013, Chris Coyier - http://css-tricks.com + Dave Rupert - http://daverupert.com
+* Credit to Thierry Koblentz - http://www.alistapart.com/articles/creating-intrinsic-ratios-for-video/
+* Released under the WTFPL license - http://sam.zoy.org/wtfpl/
+*
+*/
+
+(function( $ ){
+
+  "use strict";
+
+  $.fn.fitVids = function( options ) {
+    var settings = {
+      customSelector: null,
+      ignore: null
+    };
+
+    if(!document.getElementById('fit-vids-style')) {
+      // appendStyles: https://github.com/toddmotto/fluidvids/blob/master/dist/fluidvids.js
+      var head = document.head || document.getElementsByTagName('head')[0];
+      var css = '.fluid-width-video-wrapper{width:100%;position:relative;padding:0;}.fluid-width-video-wrapper iframe,.fluid-width-video-wrapper object,.fluid-width-video-wrapper embed {position:absolute;top:0;left:0;width:100%;height:100%;}';
+      var div = document.createElement('div');
+      div.innerHTML = '<p>x</p><style id="fit-vids-style">' + css + '</style>';
+      head.appendChild(div.childNodes[1]);
+    }
+
+    if ( options ) {
+      $.extend( settings, options );
+    }
+
+    return this.each(function(){
+      var selectors = [
+        "iframe[src*='player.vimeo.com']",
+        "iframe[src*='youtube.com']",
+        "iframe[src*='youtube-nocookie.com']",
+        "iframe[src*='kickstarter.com'][src*='video.html']",
+        "object",
+        "embed"
+      ];
+
+      if (settings.customSelector) {
+        selectors.push(settings.customSelector);
+      }
+
+      var ignoreList = '.fitvidsignore';
+
+      if(settings.ignore) {
+        ignoreList = ignoreList + ', ' + settings.ignore;
+      }
+
+      var $allVideos = $(this).find(selectors.join(','));
+      $allVideos = $allVideos.not("object object"); // SwfObj conflict patch
+      $allVideos = $allVideos.not(ignoreList); // Disable FitVids on this video.
+
+      $allVideos.each(function(){
+        var $this = $(this);
+        if($this.parents(ignoreList).length > 0) {
+          return; // Disable FitVids on this video.
+        }
+        if (this.tagName.toLowerCase() === 'embed' && $this.parent('object').length || $this.parent('.fluid-width-video-wrapper').length) { return; }
+        if ((!$this.css('height') && !$this.css('width')) && (isNaN($this.attr('height')) || isNaN($this.attr('width'))))
+        {
+          $this.attr('height', 9);
+          $this.attr('width', 16);
+        }
+        var height = ( this.tagName.toLowerCase() === 'object' || ($this.attr('height') && !isNaN(parseInt($this.attr('height'), 10))) ) ? parseInt($this.attr('height'), 10) : $this.height(),
+            width = !isNaN(parseInt($this.attr('width'), 10)) ? parseInt($this.attr('width'), 10) : $this.width(),
+            aspectRatio = height / width;
+        if(!$this.attr('id')){
+          var videoID = 'fitvid' + Math.floor(Math.random()*999999);
+          $this.attr('id', videoID);
+        }
+        $this.wrap('<div class="fluid-width-video-wrapper"></div>').parent('.fluid-width-video-wrapper').css('padding-top', (aspectRatio * 100)+"%");
+        $this.removeAttr('height').removeAttr('width');
+      });
+    });
+  };
+// Works with either jQuery or Zepto
+})( window.jQuery || window.Zepto );