Incorrect documentation around auto*Sink and auto*Source chains

Hi Flume team,

Just want to thank your great jobs to make this amazing tool!
We just did some experiments on load balancing feature of flumes with the auto chaining, basically based on Jonanthan's suggestion on the forum (https://groups.google.com/a/cloudera.org/group/flume-user/browse_thread/thread/fc275ce89aec3a19/77794f8ab9e83db6?lnk=gst&q=auto#77794f8ab9e83db6). And use logical nodes then spwan the physical node with them.
However, on the user guide, it still suggests using CollectorSource instead of autoCollectorSource, as well as didn't mention having to use the logical nodes.... But such setting didn't work on mine. Maybe that's something to rewrite?
Anyway flume is a great tool and I look forward to seeing it get better and better!

Wes