Update README.md

Author: RFBomb

README.md

@@ -19,7 +19,11 @@ allow full use of the capabilities. Thus this  project was born.
    - {InputFileName}_HelperClass.cs
       - Since the output of xsd.exe is quite ugly, this class is created as a wrapper for that class.
       - This also includes method for serializing and deserializing (saving/loading) from a file.
-      
+
+# How to Use it
+- Open up the 'Properties' of any XSD file in Visual Studio Solution Explorer and you will see a field for 'CustomTool', which likely has MSDataSetGenerator as the value.
+- Simply replace "MSDataSetGenerator" with "XSDCustomTool", then save the xsd file.
+- Note: The files generated by MSDataSetGenerator WILL conflict with the files generated by this custom tool since the class names are  both generated by xsd.exe. Just delete the files generated prior to running this tool. If you want them back, you can either set it back to using MSDataSetGenerator, or you can toggle the parameter file to generate a DataSet instead of a class.
 
 # Looking Forward
 Currently, I am only writing in C#, which is also the default output language of xsd.exe, but xsd.exe does support VB, J#, and JS as well.