Add Http2 detection

lib/metadata/policies.js

@@ -1044,6 +1044,35 @@ var policies = {
         "isAbnormalThreshold": 30,
         "hasOffenders": true
     },
+    "http2": {
+        "label": "HTTP/2 or SPDY",
+        "message": "<p>HTTP/2 is the latest version of the HTTP protocol and is designed to optimize load speed. SPDY is deprecated but still very well supported.</p><p>The latest versions of all major browsers are now compatible. The difficulty is on the server side, where technologies are not quite ready yet.</p>",
+        "hasOffenders": true,
+        "scoreFn": function(data) {
+            if (!data.toolsResults.http2) {
+                return null;
+            }
+
+            var isHttp2 = data.toolsResults.http2.metrics.http2;
+
+            var result = {
+                value: isHttp2 ? 'Yes' : 'No',
+                score: isHttp2 ? 100 : 0,
+                bad: !isHttp2,
+                abnormal: false,
+                abnormalityScore: 0
+            };
+
+            if (data.toolsResults.http2.offenders) {
+                result.offendersObj = {
+                    count: data.toolsResults.http2.offenders.http2.length,
+                    list: data.toolsResults.http2.offenders.http2
+                };
+            }
+
+            return result;
+        }
+    },
     "cachingDisabled": {
         "tool": "phantomas",
         "label": "Caching disabled",

lib/metadata/scoreProfileGeneric.json

@@ -96,6 +96,7 @@
         "serverConfig": {
             "label": "Server config",
             "policies": {
+                "http2": 2,
                 "closedConnections": 2,
                 "cachingNotSpecified": 1,
                 "cachingDisabled": 1,