Update README.md

[bradgessler]

Describe the change

Fix ActiveRecord code example typo.

Why are we doing this?

Better for newbs

Benefits

Less confusion

Drawbacks

It will take 4 seconds to merge.

Requirements

Put an X between brackets on each line if you have done the item:
[] Tests written & passing locally?
[] Code style checked?
[] Rebased with master branch?
[] Documentation updated?

[coveralls]

Coverage increased (+3.3%) to 77.671% when pulling f1cd943 on bradgessler:patch-2 into 3903f59 on piotrmurach:master.

[piotrmurach]

Hi Brad,

Thanks for contributing!

Correct me if I'm wrong but quickly checking the example, I think the change should be event.to to read the state to transition to from the event object?

[bradgessler]

Yeah, when I opened this ticket that callback wasn't getting an Event object; instead it was getting a symbol. I'm trying to recreate now and I can't, so I'll close this issue, spend some more time with it, and open it if I can recreate.

[piotrmurach]

As things stand the docs are incorrect. It probably should say event.to as that's what gets yielded to the block, a TransitionEvent value object. If that's not the case then that's defo a bug. So if you have a minute to fix the docs I would appreciate it.

[bradgessler]

I'll have a look later this evening.

Unrelated: I've got a pretty interesting approach to state machines in Rails in the works that I hope to make a gem. After looking at about 10 state machine libraries for Ruby, this one was by far the best in terms of architecture, so it will be the underlying lib for this gem if I get it to a more polished state.

In less words: thank you for this lib, you did some really great work.