Adding PublicKeyCredential feature detect for webauthn (#2393)

* Adding PublicKeyCredential feature detect for webauthn

* Undoing package-lock.json, adding author tag

feature-detects/webauthn/publickeycredential.js

@@ -0,0 +1,31 @@
+/*!
+{
+  "name": "PublicKeyCredential",
+  "notes": [
+    {
+      "name": "MDN Documentation",
+      "href": "https://developer.mozilla.org/en-US/docs/Web/API/PublicKeyCredential"
+    },
+    {
+      "name": "Google Developers solution",
+      "href": "https://developers.google.com/web/updates/2018/03/webauthn-credential-management#the_solution"
+    }
+  ],
+  "property": "publicKeyCredential",
+  "tags": ["webauthn", "web authentication"],
+  "authors": ["Eric Delia"]
+}
+!*/
+/* DOC
+Detects support for PublicKeyCredential as part of the Web Authentication API (also known as webauthn)
+*/
+
+define(['Modernizr'], function(Modernizr) {
+  Modernizr.addTest('publicKeyCredential', function() {
+    if (window.PublicKeyCredential) {
+      return true;
+    }
+
+    return false;
+  });
+});

lib/config-all.json

@@ -278,6 +278,7 @@
     "vml",
     "web-intents",
     "webanimations",
+    "webauthn/publickeycredential",
     "webgl",
     "webgl/extensions",
     "webrtc/datachannel",
@@ -293,4 +294,4 @@
     "workers/webworkers",
     "xdomainrequest"
   ]
-}
+}