updates zuul, removes comment in gulpfile

Author: Ciro S. Costa

.zuul.yml

@@ -5,7 +5,7 @@ browsers:
   - name: firefox
     version: latest
   - name: ie
-    version: latest
+    version: 9..11
   - name: iphone
     version: latest
   - name: android

gulpfile.js

@@ -46,9 +46,6 @@ gulp.task('build:vendor', function () {
   return gulp.src(paths.vendor)
     .pipe(sourcemaps.init())
       .pipe(concat('qrcode.js'))
-      // .pipe(uglify().on('error', function (e) {
-      //   console.log(e);
-      // }))
       .pipe(header(vendor.header))
       .pipe(footer(vendor.footer))
     .pipe(sourcemaps.write('./'))