Readme updated

Author: alhazacod

README.md

@@ -20,7 +20,7 @@ But it has an obvious problem, because the linear transformation transform the w
 
 1. Install Python from the [python web](https://www.python.org/).
 2. Download the executable file for your OS (Linux or Windows).
-3. Execute the file.
+3. Execute the file (it might take a while to open).
 4. Start using.
 
 The executable was created with [PyInstaller](http://www.pyinstaller.org/).