feat(serve): Optionally use Webpack's polling watcher

lib/serve.js

@@ -194,6 +194,7 @@ Serve.loadSettings = function loadSettings(argv, project) {
   options.browser = options.browser || options.defaultBrowser;
 
   options.watchPatterns = project.get('watchPatterns') || ['www/**/*', '!www/lib/**/*'];
+  options.watchPoll = !!argv['watch-poll'];
   options.printConsoleLogs = argv.consolelogs || argv['console-logs'] || argv.c;
   options.printServerLogs = argv.serverlogs || argv['server-logs'] || argv.s;
   options.isAddressCmd = argv._[0].toLowerCase() == 'address';

lib/v2/build.js

@@ -77,7 +77,11 @@ Build.bundle = function(options) {
   var compiler = webpack(config);
   if (options.watch) {
     //TODO expose watch options
-    compiler.watch(null, compileHandler);
+    var watchOptions = {};
+    if (options.watchPoll) {
+      watchOptions.poll = true;
+    }
+    compiler.watch(watchOptions, compileHandler);
   } else {
     compiler.run(compileHandler);
   }