Virtual AP update

From now on, you don’t need an additional USB dongle for Pi Proxy Bridge to work!

Better interface

Updated the installer. It now starts by asking which mode you want (virtual interface or second adapter). Then, it asks configuration questions like

• Hotspot SSID
• Hotspot password
• Hotspot’s channel
• Whether to use 5GHz

README update

I also updated the README to better explain how my project works, as well as some setup tips.