Bugfix: properly disconnect virtual joystick

When not simulating joystick keys, disconnect the joystick. This should fix games detecting that a controller is plugged in (as reported in issue #2).

Installation:

1. Copy all files in the accompanying zip (KeyToJoy-v0.3.3.zip) to a location on your computer.
2. Double-click the KeyToJoy.exe to start the app
3. Configure binds to your likings
4. Tick the checkbox to start simulating

You can abort overriding keys with Left Ctrl + Left Shift + Esc. This is useful in case you bind your primary mouse button (which will mean default clicking will be blocked)