note notice to copy library into site-packages folder to run globally

Author: geekinsanemx

picture_frame.py

@@ -40,6 +40,8 @@
 - Will be automatically resized and formatted for display
 
 Note:
+To run picture_frame.py from any PATH environment folder (copied this script to run globally),
+must copy library/ folder to /home/${USER}/.local/lib/python<version>/site-packages/
 Creates a '.images' directory for processed versions of source images.
 First run may be slow as it processes all images.
 """