Error when installing using pip

[syntaxsurge]

$ pip install pinksale-python
Collecting pinksale-python
Downloading pinksale-python-0.1.7.tar.gz (7.3 kB)
Preparing metadata (setup.py) ... error
error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [7 lines of output]
Traceback (most recent call last):
File "", line 2, in
File "", line 34, in
File "/tmp/pip-install-c4o87b3m/pinksale-python_02ec33d9c7ab4645be7ec546c4b6bf03/setup.py", line 14, in
long_description=open('readme.md').read(),
^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: 'readme.md'
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.