refactor(Cypress): add nodemodules

node_modules/read-only-stream/example/wrap.js

@@ -0,0 +1,8 @@
+var through = require('through2');
+var readonly = require('../');
+
+module.exports = function () {
+    var stream = through();
+    stream.end('wooooo\n');
+    return readonly(stream);
+};