Update README.md (Python) -> add pip installation instructions

Author: AlxndrMlk

README.md

@@ -17,7 +17,7 @@ Details on installation and use are available below:
 
 # Python Package
 
-## PyPI
+## PyPI (`pip`)
 
 The python package is not yet on PyPI but can be installed from source using pip's [git interface](https://pip.pypa.io/en/stable/topics/vcs-support/). 
 To proceed, you will need a working version of [git](https://git-scm.com) and python 3.8 or greater (available from several sources, one of the most