docs: add clear installation guide for Windows and Raspberry Pi - #135

docs: add clear installation guide for Windows and Raspberry Pi#135

Hongwei-Z wants to merge 2 commits into

open-quantum-safe:mainopen-quantum-safe/liboqs-python:mainfrom

Hongwei-Z:docs-improve-windows-rpi-installHongwei-Z/liboqs-python:docs-improve-windows-rpi-installCopy head branch name to clipboard