Update README.md

README.md

@@ -10,7 +10,34 @@ Important:
 I had to modify pkgcloud node module to remove "x-object-meta-" prefix when setting the headers. So I have uploaded customized node_module in side the project. So you can use it.
 
 _createHeaders: function (metadata) {
-    var headers = {};
+    var headers = {};# Rackspace Cloud File Metadata Bulk Updater
+
+If content in your Cloud Files account isn’t loading on your website, it might be due to Cross-Origin Resource Sharing (CORS), a security feature designed to prevent malicious content from loading in a web page by default. If your files load Asynchronous JavaScript and XML (AJAX) or embed fonts, CORS might prevent them from loading.
+
+I encountered the above issue and created this node.js project using pkgcloud rackspace node.js api.
+https://developer.rackspace.com/docs/cloud-files/quickstart/?lang=node.js#change-object-metadata
+
+Important:
+I had to modify pkgcloud node module to remove "x-object-meta-" prefix when setting the headers. This project contains the customized pkgcloud node module and you want face the same issue.
+
+pkgcloud/lib/pkgcloud/openstack/storage/storageClient.js
+```sh
+// removed this "x-object-meta-" prefix to fix cors origin key issue
+// const OBJECT_META_PREFIX = 'x-object-meta-';
+const OBJECT_META_PREFIX = '';
+```
+
+
+  # CORS
+  Cross-Origin Resource Sharing (CORS) is a mechanism that allows code running in a browser to make requests to a domain other than the one from which it originated by using HTTP headers, such as those assigned by Cloud Files API requests.
+
+  Cloud Files supports CORS requests to containers and objects.
+
+  For more information about CORS and the access control headers, see www.w3.org/TR/access-control/.
+
+Created by:
+Charitha Basnayake
+[email protected]
     Object.keys(metadata).forEach(function (key) {
       //I removed this "x-object-meta-" prefix to fix cors origin key issue
       var header = "x-object-meta-" + key;