should add pip install 'httpx[http2]'

[thefisherman2103]

Hi,
Cool tool.

If you try to run it with Python 3.9 than you'll get error such as
ImportError: Using http2=True, but the 'h2' package is not installed. Make sure to install httpx using pip install httpx[http2].

pip install 'httpx[http2]' solve it.

Cheers

[Charlie Smith]

Hi @thefisherman2103

Thanks you for trying it out, and for the info! I have added it to the requirements.txt. And add a note on the readme.

Thanks again Cheers!