support node-main

Author: GnorTech

src/node.js

@@ -59,6 +59,12 @@
       global.process.mainModule = module;
       module._compile('global.module = module;\n' +
                       'global.require = global.__nw_require = require;\n', 'nw-emulate-node');
+      if (process.argv[1]) {
+        var path = NativeModule.require('path');
+        process.argv[1] = path.resolve(process.argv[1]);
+        startup.preloadModules();
+        Module.runMain();
+      }
       return;
     }
     // There are various modes that Node can run in. The most common two