Documentation issues

[throwaway-a]

On https://www.transcrypt.org/docs/html/installation_use.html I did a pip install on Ubuntu 20.04. I found the following things confusing in the documentation:

1. It's not clear where the .. path starts from in the command "Go to directory ../Transcrypt-/transcrypt/development/automated_tests/transcrypt" (I ultimately found it at "/home/user/.local/lib/python3.8/site-packages/transcrypt/development/automated_tests", and I have no idea how I would have gotten from "../Transcrypt-" to ".local/lib/python3.8/site-packages"
2. "Open a command prompt in the demos/hello directory and type transcrypt hello." It's not clear where the demos/hello folder is (I ultimately found it at "/home/user/.local/lib/python3.8/site-packages/transcrypt/demos/hello")
3. "type localhost:8000/hello in the address bar" should say "type http://localhost:8000/hello.html in the address bar" (the lack of .html leads to the python HTTP server giving 404 errors.)

[JennaSys]

Just an observation - it looks like Transcrypt was installed with Python 3.8 and it still needs 3.7 for now.