Documentation - add documentation on how to use the client.logger

[drorIvry]

Hi,
I'm trying to use this package as a logger to send application logs to axiom, I saw there a bunch of code (like axiom.Logger etc...) but I couldn't figure out how to use it to send logs to an Axiom dataset.
Can you please add documentation for this use case?

thanks!

[bahlo]

Hi @drorIvry, sorry to get back so late. You're right! Adding that in #123.