manually add back 2.2.1 files that were removed in merge

Version 2.2 of WDC API shim

Add polyfill for endsWith to fix error in IE & Edge

Add missing progress reporting API for Simulator. We missed adding th…

…e new report progress API to the shim so it could work with the simulator. This change defines that function to prevent connectors which are using that API from breaking in the simulator

Small hotfix release for checking approved origins properly

Version 2.1.0 initial release