Update README.md

Update README to advise that this project is in BETA.

Author: Jill Nolan

README.md

@@ -1,16 +1,5 @@
 # README
 
-## This is the README for your extension pack "python-essentials"
+## Introduction
 
-You can author your README using Visual Studio Code.  Here are some useful editor keyboard shortcuts:
-
-* Split the editor (`Cmd+\` on macOS or `Ctrl+\` on Windows and Linux)
-* Toggle preview (`Shift+CMD+V` on macOS or `Shift+Ctrl+V` on Windows and Linux)
-* Press `Ctrl+Space` (Windows, Linux) or `Cmd+Space` (macOS) to see a list of Markdown snippets
-
-## For more information
-
-* [Visual Studio Code's Markdown Support](http://code.visualstudio.com/docs/languages/markdown)
-* [Markdown Syntax Reference](https://help.github.com/articles/markdown-basics/)
-
-**Enjoy!**
+**Please be advised that this project is presently in BETA, thereby it will be updated accordingly.**