Updated grunticons styles template

Author: Johan Van den Rym

_includes/grunticon.html

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+<script>
+/* grunticon Stylesheet Loader | https://github.com/filamentgroup/grunticon | (c) 2012 Scott Jehl, Filament Group, Inc. | MIT license. */
+window.grunticon=function(e){if(e&&3===e.length){var t=window,n=!(!t.document.createElementNS||!t.document.createElementNS("http://www.w3.org/2000/svg","svg").createSVGRect||!document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#Image","1.1")||window.opera&&-1===navigator.userAgent.indexOf("Chrome")),o=function(o){var a=t.document.createElement("link"),r=t.document.getElementsByTagName("script")[0];a.rel="stylesheet",a.href=e[o&&n?0:o?1:2],a.media="only x",r.parentNode.insertBefore(a,r),setTimeout(function(){a.media="all"})},a=new t.Image;a.onerror=function(){o(!1)},a.onload=function(){o(1===a.width&&1===a.height)},a.src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw=="}};
+grunticon(["/assets/css/data.svg.css", "/assets/css/data.png.css", "/assets/css/url.png.css"]);
+</script>
+<noscript><link href="/assets/css/url.png.css" rel="stylesheet"></noscript>
+

grunticon.hbs

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+{{#each customselectors}}{{this}}{{#if @last}}{{else}},{{/if}}
+{{/each}}{
+  background-image: url('{{datauri}}');
+  background-repeat: no-repeat;
+}