Demo for query storing

Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/homedir-polyfill/index.js b/node_modules/homedir-polyfill/index.js
new file mode 100644
index 0000000..298168e
--- /dev/null
+++ b/node_modules/homedir-polyfill/index.js
@@ -0,0 +1,9 @@
+'use strict';
+
+var os = require('os');
+if (typeof os.homedir !== 'undefined') {
+  module.exports = os.homedir;
+} else {
+  module.exports = require('./polyfill.js');
+}
+