HT Stockplugin hider V 0.9.1

Quick update. Version 0.9.1 brings a handful last minute fixes.

• Hint at the bottom that you need to restart FL Studio to apply the changes #5
• Security check if the file is moveable #4
• Orange items should not be selected by select all. #3
• Still Non FL Studio plugins in the list #2
• Failed to execute script after image-line folder not found #1
• Updated Readme