Config section for auditing in V4 is incorrect

The documentation for auditing in V4 incorrectly mentions using the ForwardReceivedMessagesTo rather than using the AuditConfig section. The code clearly enables auditing based on AuditConfig and only falls back to ForwardReceivedMessagesTo for V3 compatibility:

https://github.com/Particular/NServiceBus/blob/master/src/NServiceBus.Core/Audit/Audit.cs
Note about backwards compatibility in V4

Added note about V4 continuing to support the ForwardReceivedMessagesTo attribute for backwards compatibility.
Merge pull request #305 from JamesKovacs/patch-1

Config section for auditing in V4 is incorrect