Watchify: log compilation errors PR1100

doc/handbook/tutorials/Gulp.md

@@ -300,6 +300,7 @@ gulp.task('copy-html', function () {
 function bundle() {
     return watchedBrowserify
         .bundle()
+        .on('error', fancy_log)
         .pipe(source('bundle.js'))
         .pipe(gulp.dest('dist'));
 }