cdn urls are not replaced in README.md

.gitignore

 node_modules
 target
+bower_components

package.json

     "gulp-util": "latest",
     "web-component-tester": "3.3.10",
     "yargs": "latest",
-    "gulp-git": "latest"
+    "gulp-git": "latest",
+    "gulp-add-src": "latest"
+
   },
   "devDependencies": {
     "chalk": "latest",

tasks/cdn.js

 var _ = require('lodash');
 var args = require('yargs').argv;
 var git = require('gulp-git');
+var addsrc = require('gulp-add-src');
 
 var stagingBasePath = config.paths.staging.cdn;
 var version = config.version;
 });
 
 gulp.task('cdn:stage-vaadin-components', function() {
-  return gulp.src(['README.md', 'LICENSE.html', 'ga.js', 'vaadin-components.html', 'demo/*', 'apidoc/*'], {base:"."})
+  return gulp.src(['LICENSE.html', 'ga.js', 'vaadin-components.html', 'demo/*', 'apidoc/*'], {base:"."})
     .pipe(replace('https://cdn.vaadin.com/vaadin-components/latest/', '../../'))
+    .pipe(addsrc('README.md'))
     .pipe(gulp.dest(stagingPath + "/vaadin-components"));
 });