docs: add an example for setting the state outside event (#302)

[ratoi-crysty]

close #302.

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 22ad473:

Sandbox	Source
React	Configuration
React Typescript	Configuration

[dai-shi]

Thanks for the suggestion. Would you please make the example code minimal? We'd like to make readme as small as possible. (We could create a wiki page and add a link.)

What do you think about recommending using batchedUpdates in store creator, in addAFish?

[dai-shi]

Not sure how this is helpful. Remove it or replace the link to #302 and add the twitter link there?

[ratoi-crysty]

OK

[ratoi-crysty]

@dai-shi I'm not sure what should I delete from the example to make it smaller. As I tried to make it as minimal as possible. Any suggestions?

Regarding moving the batchFunction inside the action, I did not added there in order to better point out were the issue comes from. I can move it if you think it makes more sense.

[dai-shi]

Regarding moving the batchFunction inside the action, I did not added there in order to better point out were the issue comes from. I can move it if you think it makes more sense.

I understand your point. Let's keep it as is and we will see.

[dai-shi]

Merging this.

[Tirzono]

Thanks for this addition @ratoi-crysty and @dai-shi, I think this is helpful for more people.