anchor.diff:  
       //- Change no-js to js
       script.
  +      //- Swap no-js for js
         document.documentElement.className = document.documentElement.className.replace(/\bno-js\b/,'js');
  -      if (document.createElement("input").placeholder !== undefined) { document.documentElement.className += " placeholder"; }
  +      //- Cut the mustard
  +      if('querySelector' in document && 'localStorage' in window && 'addEventListener' in window) {
  +        document.documentElement.className += " mustard";
  +      }
   
     body(class='#{bodyClass}')
       include templates/_browseHappy
   
  +    #fb-root
  +    script.
  +      (function(d, s, id) {
  +        var js, fjs = d.getElementsByTagName(s)[0];
  +        if (d.getElementById(id)) return;
  +        js = d.createElement(s); js.id = id;
  +        js.src = "//connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v2.0";
  +        fjs.parentNode.insertBefore(js, fjs);
  +      }(document, 'script', 'facebook-jssdk'));
  +
       block alerts
   
       header
  -      .header
  +      .header.js-fullscreen-target
           block header
             include templates/_logo
   
  
positive.code:     // endbuild
  
      // build:js({app,.tmp}) scripts/main.js
      script(src='scripts/modernizrTests.js')
      script(src='scripts/animations.js')
      script(src='scripts/validation.js')
      script(src='scripts/consolefix.js')
  
negative.code:           block footer
              p &copy; Copyright <a class="inherit" href="http://simplebitdesign.com">Simple Bit Design LTD</a> 2014
              .social-buttons
                .social-button--twitter
                  a(href="https://twitter.com/SimpleBitDesign", class="twitter-follow-button", data-show-count="false") Follow @SimpleBitDesign
                .social-button--facebook.fb-like(data-href="http://simplebitdesign.com", data-layout="button", data-action="like", data-show-faces="false" data-share="false")
  
  
  
              p
                small Our website uses delicious cookies to improve your experience. We'll assume you're ok with that.
  
      // build:js(app) scripts/vendor.js
      // bower:js
  