Expanded the widgetgallery README.
Expanded the widgetgallery README.

ProtonMail/ui,cainiaocome/ui,cainiaocome/ui,beni55/ui,hajimehoshi/ui,robbiev/ui,robbiev/ui,janstk/ui,hajimehoshi/ui,292388900/ui,cainiaocome/ui,beni55/ui,mirrr/ui,HunterChen/ui,HunterChen/ui,292388900/ui,mirrr/ui,ProtonMail/ui,mirrr/ui,robbiev/ui,beni55/ui,hajimehoshi/ui,ProtonMail/ui,292388900/ui,janstk/ui,HunterChen/ui,janstk/ui