Update README.md

[sheneeb]

change the install setup to
pip install .

• Does this PR have a descriptive title that could go in our release notes?
• Does this PR add any new dependencies?
• Does this PR modify any existing APIs?
  • Is the change to the API backwards compatible?
• Have you built the documentation (reference and/or tutorial) and verified the generated documentation is appropriate?

Reference Issues/PRs

What does this implement/fix? Briefly explain your changes.

Any other comments?

[sheneeb]

Request to update installation instructions in README

The current documentation still refers to python setup.py install, which is outdated and no longer supported since graspologic migrated to PEP 517/518 standards using pyproject.toml.

I’m requesting to update the installation instructions to use:

pip install .

This ensures compatibility with modern Python packaging tools and avoids confusion for new contributors attempting local installs.