Add support for Electron and NW.js.

Closes #18.

Author: bnjmnt4n

platform.js

@@ -357,6 +357,7 @@
       'Avant Browser',
       'Breach',
       'Camino',
+      'Electron',
       'Epiphany',
       'Fennec',
       'Flock',
@@ -680,6 +681,10 @@
         name = /[a-z]+(?: Hat)?/i.exec(/\bAndroid\b/.test(os) ? os : data) + ' Browser';
       }
     }
+    // Add Chrome version to description for Electron.
+    else if (name == 'Electron' && (data = (/\bChrome\/([\d.]+)\b/.exec(ua) || 0)[1])) {
+      description.push('Chromium ' + data);
+    }
     // Detect non-Opera (Presto-based) versions (order is important).
     if (!version) {
       version = getVersion([
@@ -746,10 +751,22 @@
           typeof context.process == 'object' && !context.process.browser &&
           (data = context.process)
         ) {
-          name = 'Node.js';
-          arch = data.arch;
-          os = data.platform;
-          version = /[\d.]+/.exec(data.version)[0];
+          if (typeof data.versions == 'object') {
+            if (typeof data.versions.electron == 'string') {
+              description.push('Node ' + data.versions.node);
+              name = 'Electron';
+              version = data.versions.electron;
+            } else if (typeof data.versions.nw == 'string') {
+              description.push('Chromium ' + version, 'Node ' + data.versions.node);
+              name = 'NW.js';
+              version = data.versions.nw;
+            }
+          } else {
+            name = 'Node.js';
+            arch = data.arch;
+            os = data.platform;
+            version = /[\d.]+/.exec(data.version)[0];
+          }
         }
         else if (rhino) {
           name = 'Rhino';

test/test.js

@@ -628,6 +628,18 @@
       'os': 'iOS 4.3+'
     },
 
+    'Electron 1.4.5 (Chromium 53.0.2785.113; Node 6.5.0) on Windows 10 64-bit': {
+      'ua': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) electron-app/1.0.0 Chrome/53.0.2785.113 Electron/1.4.5 Safari/537.36',
+      'global': {},
+      'layout': 'Blink',
+      'name': 'Electron',
+      'os': 'Windows 10 64-bit',
+      'process': { 
+        'versions': { 'electron': '1.4.5', 'node': '6.5.0' }
+      },
+      'version': '1.4.5'
+    },
+
     'Epiphany 0.9.2 on Linux i686': {
       'ua': 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030908 Epiphany/0.9.2',
       'layout': 'Gecko',
@@ -1737,6 +1749,18 @@
       'version': '1.0'
     },
 
+    'NW.js 0.18.4 (Chromium 54.0.2840.71; Node 7.0.0) on Windows 10 64-bit': {
+      'ua': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36',
+      'global': {},
+      'layout': 'Blink',
+      'name': 'NW.js',
+      'os': 'Windows 10 64-bit',
+      'process': { 
+        'versions': { 'nw': '0.18.4', 'node': '7.0.0' }
+      },
+      'version': '0.18.4'
+    },
+
     'Opera 9.00 on Nintendo Wii': {
       'ua': 'Opera/9.00 (Nintendo Wii; U; ; 1309-9; en)',
       'layout': 'Presto',