Add polyfill (#2344)

* Add Polyfill

It's [kinda popular](https://github.com/Financial-Times/polyfill-service),
amd can be tested [here](https://getstation.com/)

* Add a pattern

* Fix a typo

src/apps.json

@@ -7662,6 +7662,17 @@
       "script": "polymer\\.js",
       "website": "http://polymer-project.org"
     },
+    "Polyfill": {
+      "cats": [
+        12
+      ],
+			"icon": "polyfill.svg",
+      "script": [
+				"^https?://cdn\\.polyfill\\.io/",
+				"/polyfill\\.min\\.js"
+			],
+      "website": "https://polyfill.io"
+    },
     "Posterous": {
       "cats": [
         1,

src/icons/polyfill.svg

@@ -0,0 +1,6 @@
+<svg class='logo' viewBox="0 0 326 226" xmlns="http://www.w3.org/2000/svg">
+	<g>
+		<path fill="#ccc" d="M0 0h72.4v226.8H0zM84.6 0H157v226.8H84.7zM169.2 0h72.5v226.8h-72.5zM254 0h72.3v226.8H254z"/>
+		<path fill="#0A95C7" d="M0 0h72.4v139H0zM84.6 0H157v92.6H84.7zM169.2 0h72.5v46.3h-72.5z"/>
+	</g>
+</svg>