Update option A documentation with needed changes to releases section

[zaid]

Update the Application Start Behaviour section in the README with the needed changes to the releases configuration when choosing Option A.

Resolves #133

[tompave]

Thank you for this!

A couple of questions:

1. Adding the releases: [ ... ] key to the project(): is it required for both runtime: false and app: false options? It's not clear.
2. Is this not required at all with Option B?

[zaid]

Thank you for this!

@tompave my pleasure, thank you for your great work on this library!

A couple of questions:

1. Adding the releases: [ ... ] key to the project(): is it required for both runtime: false and app: false options? It's not clear.

Great question, I just checked and it seems that this is needed for app: false as well so I'll update the PR with the needed changes.

2. Is this not required at all with Option B?

I just checked and it looks like Option B doesn't require these changes.

[tompave]

Awesome, thank you.

When you amend the PR, can you please specify that this is only required when using releases? i.e. not necessary if running with Mix?

[zaid]

When you amend the PR, can you please specify that this is only required when using releases? i.e. not necessary if running with Mix?

@tompave sure thing, I just updated the PR with the needed changes. Please let me know if I need to tweak this further.

[nathanalderson]

It would be helpful to note that this is also needed for fun_with_flags_ui if that is being used, especially since that README references this one.

[tompave]

Thank you for this work!
@nathanalderson I think that's fine. At the end of the section the Readme mentions that FWF.UI also needs to be configured differently.