Replace python 2 README file with EOL message/warning (Issue #189)

README file was replaced with a warning message about the EOL of Python 2 code.

python/README

@@ -1,127 +1,12 @@
 This directory contains the Python 2 source code for IV Swinger 1 and IV
-Swinger 2. For now, this co-exists with the Python 3 code in the
-parallel python3 directory, and both are being maintained.
-
---------------------------------------------------------------------------------
-Anyone who is running the IV Swinger python code directly is highly
-encouraged to use the Python 3 code.
---------------------------------------------------------------------------------
-
-
-Installing Python 2 and required packages
------------------------------------------
-
- macOS with System Python:
- -------------------------
-
-  Up to at least Big Sur (10.16), macOS includes Python 2.7.10 as the
-  "system" Python. This is what you get if you just type "python" in a
-  Terminal window without installing anything. In Catalina and Big Sure,
-  it is deprecated and may not be included at all in later macOS
-  releases. Tcl/Tk (which is used for the Tkinter GUI code) is also
-  included, but is also an old version (8.5.9). To run the IV Swinger 2
-  Python 2 code with the macOS system Python, you just need to install
-  some Python packages using "pip" as follow:
-
-      % pip install Pillow pyserial numpy matplotlib scipy Send2Trash
-
-  If you don't have pip, see https://pip.pypa.io/en/stable/installing/
-
-  Note that Dark Mode is not supported with the pre-installed Python and
-  Tcl/Tk.
-
-
- macOS with Python 2.7.18:
- -------------------------
-
-  First, ask yourself, "why would I want to do this?" If you are going
-  to go to the trouble of installing Python, you should install the
-  latest Python 3 and run the Python 3 IV Swinger 2 code.
-
-  There are multiple ways to install Python 2.7.18 (the last Python 2
-  release). The easiest is to download and run the installer from
-  python.org. But the best way (in my opinion) is to use the pyenv
-  tool. This makes it easy to switch between different Python versions:
-
-    - Install homebrew per instructions at https://brew.sh/
-
-      % /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
-
-         or update it, if it is already installed:
-
-      % brew update
-
-    - Install pyenv using homebrew
-
-      % brew install pyenv
-
-    - Set up your bash profile for pyenv:
-
-      % echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.bash_profile
-
-      For non-bash shells, see https://github.com/pyenv/pyenv
-
-    - Install tcl-tk:
-
-      % brew install tcl-tk
-
-    - Install python 2.7.18 with config for tcl/tk and pyinstaller:
-
-      % env PYTHON_CONFIGURE_OPTS="--with-tcltk-includes='-I/usr/local/opt/tcl-tk/include' --with-tcltk-libs='-L/usr/local/opt/tcl-tk/lib -ltcl8.6 -ltk8.6' --enable-framework" pyenv install 2.7.18
-
-    - Configure pyenv to use Python 2.7.18 in the IV_Swinger/python directory:
-
-      % cd <your GitHub path>/IV_Swinger/python
-      % pyenv local 2.7.18
-      % python -V
-      2.7.18
-
-    - Install Python packages required by the IV Swinger 2 code:
-
-      % cd <your GitHub path>/IV_Swinger/python
-      % pip install Pillow pyserial numpy matplotlib scipy Send2Trash
-
-    - Test:
-
-      % cd <your GitHub path>/IV_Swinger/python
-      % python IV_Swinger2_gui.py
-
-
- Windows with Python 2.7.18:
- ---------------------------
-
-  First, ask yourself, "why would I want to do this?" If you are going
-  to go to the trouble of installing Python, you should install the
-  latest Python 3 and run the Python 3 IV Swinger 2 code.
-
-  There are multiple ways to install Python 2.7.18 (the last Python 2
-  release). The easiest is to download and run the installer from
-  python.org. But the best way (in my opinion) is to use the Windows
-  port of the pyenv tool. This makes it easy to switch between different
-  Python versions:
-
-    - Install and configure pyenv-win using instructions at:
-
-        https://github.com/pyenv-win/pyenv-win#installation
-
-    - Install python 2.7.18:
-
-      > pyenv install 2.7.18
-
-    - Configure pyenv to use Python 2.7.18 in the IV_Swinger/python directory:
-
-      > cd <your GitHub path>\IV_Swinger\python
-      > pyenv local 2.7.18
-      > python -V
-      2.7.18
-
-    - Install Python packages required by the IV Swinger 2 code:
-
-      > cd <your GitHub path>\IV_Swinger\python
-      > pip install Pillow pyserial numpy matplotlib scipy Send2Trash pywin32
-
-    - Test:
-
-      > cd <your GitHub path>\IV_Swinger\python
-      > python IV_Swinger2_gui.py
-
+Swinger 2.
+
+################################################################################
+##
+## WARNING!! WARNING!! WARNING!! WARNING!! WARNING!! WARNING!! WARNING!! 
+##
+## Release v2.7.1 was the last to include updates to the Python 2 code.
+## It is being left here for reference purposes but IS NO LONGER
+## SUPPORTED. Python 2 itself has not been supported since 1/1/2020.
+##
+################################################################################