Docs more newbee friendly

[guettli]

You start like this in the docs:

If you have generated a profile file called ... Source: https://jiffyclub.github.io/snakeviz/

If you are a newbee. Then you might not know how to create a profile file.

I think it would help if you explain how to create such a file in one line.

Maybe like this:

You can create a profile file like this: python -m cProfile -o program.prof my_script.py

(thank you for this great tool)

[jiffyclub]

Thanks for the note! Instructions on building profiles are there, but slightly down the page: https://jiffyclub.github.io/snakeviz/#generating-profiles

The docs are generally super out of date and in need of some work. 😭