Add commenting in web.config for download proxy
Add commenting in web.config for download proxy

Indicate that the download proxy is experimental.

DenverDev/.NET-Wrapper-for-CKAN-API,DenverDev/.NET-Wrapper-for-CKAN-API,opencolorado/.NET-Wrapper-for-CKAN-API,opencolorado/.NET-Wrapper-for-CKAN-API,opencolorado/.NET-Wrapper-for-CKAN-API