Correct URL for assertion export

[Cantor, Scott]

> Are the URL parameters correct? The documentation how to query the
> AssertionExport handler was not clear to me:
>https://wiki.shibboleth.net/confluence/display/SHIB2/NativeSPAssertionExport

The URL is implementation dependent and not documented (and I don't even remember it offhand). The URL is published through the environment, as Peter's example demonstrates using.

-- Scott