Add a|area[ping] detection (#2671)

* Add a|area[ping] detect

* add aping|areaping to integration tests

* Add author tag

feature-detects/a/aping.js

@@ -0,0 +1,20 @@
+/*!
+{
+  "name": "a[ping] Attribute",
+  "property": "aping",
+  "caniuse": "ping",
+  "tags": ["media", "attribute"],
+  "builderAliases": ["a_ping"],
+  "authors": ["Hélio Correia (@heliocorreia)"],
+  "notes": [{
+    "name": "WHATWG Spec",
+    "href": "https://html.spec.whatwg.org/dev/links.html#ping"
+  }]
+}
+!*/
+/* DOC
+The ping attribute, if present, gives the URLs of the resources that are interested in being notified if the user follows the hyperlink.
+*/
+define(['Modernizr', 'createElement'], function(Modernizr, createElement) {
+  Modernizr.addTest('aping', !window.externalHost && 'ping' in createElement('a'));
+});

feature-detects/a/areaping.js

@@ -0,0 +1,20 @@
+/*!
+{
+  "name": "area[ping] Attribute",
+  "property": "areaping",
+  "caniuse": "ping",
+  "tags": ["media", "attribute"],
+  "builderAliases": ["area_ping"],
+  "authors": ["Hélio Correia (@heliocorreia)"],
+  "notes": [{
+    "name": "WHATWG Spec",
+    "href": "https://html.spec.whatwg.org/dev/links.html#ping"
+  }]
+}
+!*/
+/* DOC
+The ping attribute, if present, gives the URLs of the resources that are interested in being notified if the user follows the hyperlink.
+*/
+define(['Modernizr', 'createElement'], function(Modernizr, createElement) {
+  Modernizr.addTest('areaping', !window.externalHost && 'ping' in createElement('area'));
+});

lib/config-all.json

@@ -24,6 +24,8 @@
   ],
   "feature-detects": [
     "a/download",
+    "a/aping",
+    "a/areaping",
     "ambientlight",
     "applicationcache",
     "audio/audio",

test/browser/integration/caniuse.js

@@ -18,6 +18,8 @@ window.caniusecb = function(caniuse) {
     // the feature detect docs
     var map = {
       adownload: 'download',
+      aping: 'ping',
+      areaping: 'ping',
       ambientlight: 'ambient-light',
       apng: 'apng',
       appearance: 'css-appearance',