Mnesia as default queue not mentioned in start_queue/2 documentation

[Zgore14]

First of all, thank you for this amazing library. It's really useful to me 💯

While reading the documentation i've noticed a inconsistency. In the README.md and in the code the Mnesia queue is the default.
But ErlangQueue is still indicated as the default in the start_queue/2 function documentation :

honeydew/lib/honeydew.ex

Lines 346 to 347 in 3a35093

	- `queue`: is the module that queue will use. Defaults to
	`Honeydew.Queue.ErlangQueue`. You may also provide args to the queue's

[fanzeyi]

Same. This is very confusing :/