add_sitemap: Submit a sitemap.
Description
See here for details: https://developers.google.com/webmaster-tools/v3/sitemaps/submit
Usage
add_sitemap(siteURL, feedpath)
Arguments
siteURL
The URL of the website to delete. Must include protocol (http://).
feedpath
The URL of the sitemap to submit. Must include protocol (http://).
Value
TRUE if successful, raises an error if not.