Install From Source Installation Correction

[BananaBonanza]

Feature or Issue
The "Install from Source" section of the README.md is incorrect and points to the wrong repo location.

Possible Solution
Update that section to instead read:

git clone git@github.com:DAF-Digital-Transformation-Office/PySysML2.git

cd PySysML2/

pip install .

Additional Context
It may just be that I didn't have access to your specific repo location. However, every time I tried to clone from the "TrekkieByDay" location, I kept getting an error in bash stating:

ERROR: Repository not found.
fatal: Could not read from remote repository.

[j-simmons-phd]

I modified the clone repo step to be the following:

git clone https://github.com/DAF-Digital-Transformation-Office/PySysML2.git.

This modification addresses both the new repo location under the DTO and allows for cloning without having git set up to use github.

One other note, for full functionality, PySysML2 appears to require Graphviz be installed as a prerequisite.