Add Assistant Vision example to README

[alexrudall]

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[mtantawy]

First of all, thank you for documenting this and providing an example, that's really helpful!

If I could only make a change here that would be somehow communicating the fact that creating an assistant should be a one-time action, a user won't need to recreate the assistant for every attempt to describe or read an image, that's what threads are for

[alexrudall]

To be honest I treat them as pretty throwaway as well :D

What about # Create assistant (or grab an existing one)

[mtantawy]

It's true, they come for free, I like to keep them unique for organization purposes anyway

To be honest I treat them as pretty throwaway as well :D

What about # Create assistant (or grab an existing one)

That sounds good, there is always room for clarifying more but that's probably out of scope of your example here

[alexrudall]

Alrighty, I tweaked it a bit more here

Thanks for the suggestion!

[mtantawy]

Looks great, thank you for taking it into consideration! :)