Add discussions to Help menu

menus/darwin.cson

@@ -190,6 +190,7 @@
     submenu: [
       { label: 'Terms of Use', command: 'application:open-terms-of-use' }
       { label: 'Documentation', command: 'application:open-documentation' }
+      { label: 'Community Discussions', command: 'application:open-discussions' }
       { type: 'separator' }
     ]
   }