Added build instructions.

README.md

@@ -22,4 +22,13 @@ Download the new version of the tool and extract it to it's own directory.
 
 1. Close the tool if it's running. 
 2. Open a file manager and navigate to the old version directory.
-3. Inside the "app" directory, move "app.db" and "schedule.db" to the app directory of the new tool. 
+3. Inside the "app" directory, move "app.db" and "schedule.db" to the app directory of the new tool.
+
+## Building Instructions
+
+Make sure pyinstaller is installed: pip install pyinstaller
+- Open into the projects working directory where app.py is located.
+- Run the following command: pyinstaller app.py
+- This will create new directories in the working directory: "build" and "dist"
+- Once completed copy the following static directories and files into the dist/app directory: "static", "templates", "LICENSE", "README.md"
+- Now the tool can be packaged into a ZIP for distribution.