Add good news note about 0.4.0-beta build status.

README.md

@@ -5,7 +5,9 @@ Open XML Document Code Generator
 
 The Open XML Document Code Generator is a dotnet standard library that contains processes that convert OpenXML documents (such as .docx, .pptx, and .xlsx) into [CodeCompileUnit](https://docs.microsoft.com/en-us/dotnet/api/system.codedom.codecompileunit?view=netcore-3.1) objects that can be transformed into source code using any class that inherits from the [CodeDomProvider](https://docs.microsoft.com/en-us/dotnet/api/system.codedom.compiler.codedomprovider?view=netcore-3.1) class.  This allows source code generation into other .NET languages, such as Visual Basic.net, for greater learning possibilities.
 
-Please be aware that while this project is producing working code, I would consider this is in alpha status and not yet ready for production.  More testing should be done before it will be production ready.
+Please be aware that while this project is producing working code, I would consider this is in beta status and not yet ready for production.  More testing should be done before it will be production ready.
+
+As of version 0.4.0-beta, this project is now generating code that can reproduce entire basic OpenXml documents.  More testing is required of advanced document types before this project can move beyond beta status.
 
 Looking for a front end interface for this project?  Check out [DocxToSource](https://github.com/rmboggs/DocxToSource). There is still much work to be done but it is becoming a nice replacement for the old OpenXml SDK Productivity Tool.