Install with pip fails

When I'm try to install the repo as a package with `pip`, there is no problem in Linux, but in Windows Python 3.9 it fails due to fail in README.md. Basically, in Windows python tries to open file with cp1254 encoding by default, and it results in a failed installation giving the following error message

```python
(base) C:\Users\devri>pip install git+https://github.com/google-research/bleurt.git --force-reinstall --no-cache-dir
Collecting git+https://github.com/google-research/bleurt.git
Cloning https://github.com/google-research/bleurt.git to c:\users\devri\appdata\local\temp\pip-req-build-l293_p23
Running command git clone -q https://github.com/google-research/bleurt.git 'C:\Users\devri\AppData\Local\Temp\pip-req-build-l293_p23'
Resolved https://github.com/google-research/bleurt.git to commit c6f2375c7c178e1480840cf27cb9e2af851394f9
ERROR: Command errored out with exit status 1:
command: 'C:\tools\Anaconda3\envs\jury\python.exe' -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\devri\\AppData\\Local\\Temp\\pip-req-build-l293_p23\\setup.py'"'"'; __file__='"'"'C:\\Users\\devri\\AppData\\Local\\Temp\\pip-req-build-l293_p23\\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\devri\AppData\Local\Temp\pip-pip-egg-info-s1jaf9gz'
cwd: C:\Users\devri\AppData\Local\Temp\pip-req-build-l293_p23\
Complete output (7 lines):
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\devri\AppData\Local\Temp\pip-req-build-l293_p23\setup.py", line 23, in
long_description = fh.read()
File "C:\tools\Anaconda3\envs\base\lib\encodings\cp1254.py", line 23, in decode
return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x8e in position 2560: character maps to
```