Add Neovim Installation Requirements

README.rst

@@ -73,10 +73,16 @@ Installation
 
 Requirements
 ------------
-You need a VIM version that was compiled with Python 3 or later
+- **Vim**: You need a VIM version that was compiled with Python 3 or later
 (``+python3``).  You can check this from within VIM using
 ``:python3 import sys; print(sys.version)``.
 
+- **Neovim**: You need a python environment with ``pynvim`` installed:
+``pip install pynvim``
+
+then check your environment is correctly setup from within Neovim using
+``:checkhealth provider.python``
+
 Manual installation
 -------------------