Fix Windows setup

[CillianFn]

Issue:
When running the following setup command on Windows 10 (Python 3.8.5),
pip install -e ."[dev]"

Getting the following error
ERROR: Command errored out with exit status 1: command: 'C:\Users\Cillian\Anaconda3\envs\py385\python.exe' -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'D:\\Projects\\weather-tools\\weather-tools\\setup.py'"'"'; __file__='"'"'D:\\Projects\\weather-tools\\weather-tools\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\Cillian\AppData\Local\Temp\pip-pip-egg-info-ewy709ue' cwd: D:\Projects\weather-tools\weather-tools\ Complete output (7 lines): Traceback (most recent call last): File "<string>", line 1, in <module> File "D:\Projects\weather-tools\weather-tools\setup.py", line 66, in <module> long_description=open('README.md', 'r').read(), File "C:\Users\Cillian\Anaconda3\envs\py385\lib\encodings\cp1252.py", line 23, in decode return codecs.charmap_decode(input,self.errors,decoding_table)[0] UnicodeDecodeError: 'charmap' codec can't decode byte 0x8f in position 2775: character maps to <undefined> ----------------------------------------

Explanation of issue: https://dev.to/methane/python-use-utf-8-mode-on-windows-212i

Expected:
Run command with no issue

Fix:
Update the following line https://github.com/google/weather-tools/blob/main/setup.py#L66 to include encoding
long_description=open('README.md', 'r', encoding='utf-8').read(),

@alxmrs I have a branch locally with this fix, happy to put up a PR but I seem to not have write permissions for this repo. Would appreciate getting those as I'd like to make more (interesting 😉 ) contributions in the future!

[alxmrs]

Hey @CillianFn! Thanks so much for raising attention to this – we're happy to have a windows developer to iron out issues on that platform.

Glad to have your fix. Would you mind forking the repo? From there, you should be able to issue a PR.