Add --no-updater flag

Summary: Provide a `--no-updater` option that disables the in-app auto updater when passed.

Reviewed By: jknoxville

Differential Revision: D13713919

fbshipit-source-id: 49a647105fea1efa23f653e4a6ed452b3489879b

scripts/start-dev-server.js

@@ -26,6 +26,7 @@ function launchElectron({bundleURL, electronURL}) {
   const args = [
     path.join(STATIC_DIR, 'index.js'),
     '--remote-debugging-port=9222',
+    ...process.argv,
   ];
 
   const proc = child.spawn(electronBinary, args, {