Add OS parsing

src/parser-os.js

@@ -0,0 +1,24 @@
+import { getFirstMatch } from './utils';
+
+export default [
+  {
+    test: [/windows phone/i],
+    detect(ua) {
+      const version = getFirstMatch(/windows phone (?:os)?\s?(\d+(\.\d+)*)/i, ua);
+      return {
+        name: 'Windows Phone',
+        version
+      }
+    }
+  },
+  {
+    test: [/macintosh/i],
+    detect(ua) {
+      const version = getFirstMatch(/mac os x (\d+([_\s]\d+)*)/i, ua).replace(/[_\s]/g, '.');
+      return {
+        name: 'macOS',
+        version
+      }
+    }
+  }
+]