Installation instructions

Author: DavidMStraub

README.md

@@ -6,6 +6,12 @@ A [GEDCOM 7](https://gedcom.io/) parser for Python.
 
 The parser is based on regular expressions generated directly from the ABNF grammar via [`abnf-to-regexp`](https://github.com/aas-core-works/abnf-to-regexp). It does not attempt to parse files that are not standards compliant.
 
+## Installation
+
+```
+python -m pip install gedcom7
+```
+
 ## Usage
 
 ```python