Using Yii3 as a micro framework about docs HOT 5 OPEN

Sorry made this PR in a rush and more of documentation. I think it’s not clear in the installation and can lead to confusion, especially for first time users.

from docs.

Yes, you need PSR HTTP factory. I recommend using nyholm/psr7.

from docs.

I think it's interesting enough use case to be part of the guide.

from docs.

Ok, any guidance on how to write this up? I think I'm going to take the same approach from the 2x version of writing a micro framework... but highlighting the psr dependency.

from docs.

Oh, you want to do it? Great! Then https://www.yiiframework.com/doc/guide/2.0/en/tutorial-yii-as-micro-framework is a good start. Document should be placed into tutorial/yii-as-micro-framework.md

from docs.