Need python, not python3 for windows anaconda.

Update Windows instructions regarding non-standard install location

Author: akenmorris

Documentation/install/Windows_README.txt

@@ -3,13 +3,16 @@
 Shapeworks
 =====================
 
-The ShapeWorks software is an open-source distribution of a new method for constructing compact 
-statistical point-based models of ensembles of similar shapes that does not rely on any specific 
-surface parameterization. The method requires very little preprocessing or parameter tuning, and 
-is applicable to a wide range of shape analysis problems, including nonmanifold surfaces and 
-objects of arbitrary topology. The proposed correspondence point optimization uses an entropy-based 
-minimization that balances the simplicity of the model (compactness) with the accuracy of the 
-surface representations. The ShapeWorks software includes tools for preprocessing data, computing 
+The ShapeWorks software is an open-source distribution of a new method
+for constructing compact statistical point-based models of ensembles
+of similar shapes that does not rely on any specific surface
+parameterization. The method requires very little preprocessing or
+parameter tuning, and is applicable to a wide range of shape analysis
+problems, including nonmanifold surfaces and objects of arbitrary
+topology. The proposed correspondence point optimization uses an
+entropy-based minimization that balances the simplicity of the model
+(compactness) with the accuracy of the surface representations. The
+ShapeWorks software includes tools for preprocessing data, computing
 point-based shape models, and visualizing the results.
 
 =====================
@@ -18,7 +21,8 @@ You have downloaded a binary distribution of ShapeWorks.
 
 To use:
 
-1. Download and install the "Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019." :
+1. Download and install the "Microsoft Visual C++ Redistributable for
+Visual Studio 2015, 2017 and 2019." :
 
 https://aka.ms/vs/16/release/vc_redist.x64.exe
 
@@ -36,5 +40,9 @@ https://repo.anaconda.com/archive/Anaconda3-2019.10-Windows-x86_64.exe
 
 7. CD to your copied Examples\Python location
 
-8. Run "python3 RunUseCase.py --use_case ellipse"
+8. Run "python RunUseCase.py --use_case ellipse"
 
+Note: If you have installed ShapeWorks in a different location than
+"C:\Program Files\ShapeWorks", please add the path to the "bin"
+directory as the final argument to RunUseCase.py so that the path will
+be set correctly.