```pip install -e .``` in environment setup fails on windows machines due to default ASCII encoding

[GuaiGuaiOnMyComputer]

Hi everyone.

So the last step in the Environment Setup chapter in README.md requires to run command

pip install -e .

which executes the script setup.py. The script fails at line 26 on windows machines since it tries to open the file README.md, which contains emojis and non-ASCII characters, and python's default encoding to read files on windows is ASCII.

Specifying the encoding to open the file fixes the issue. Like

long_description=open("README.md", encoding = 'utf-8').read(), 

Could someone kindly modify the code to grant a bit more smoothness for windows users? Much appreciated.