Suggest update to Certificates section of README

[Daksol]

I have solved my own problem with the ca.crt certificate, but I had to dig around a bit to understand that the ca.crt certificate needs to be in a particular directory for it to work properly.

See my closing comment on #449 which suggests a small update to the Certificates paragraph of the Readme

Much appreciating Selenium wire, thankyou for getting this set up,.

[wkeeling]

Thanks for raising this and sorry for the delay in responding.

Selenium Wire automatically extracts ca.crt and saves it in the .seleniumwire folder when it first runs. It shouldn't be necessary to do this manually. The fact that you have had to do it manually suggests that something may be preventing the automatic extraction in your environment. I know it was a few weeks back now, but do you recall if there was any error in your terminal/log when you hit this issue?