Updating the readme to clarify donations vs support agreements
Updating the readme to clarify donations vs support agreements

I've attempted to clarify that donations are separate from commercial support in the hope of minimising any future confusion.

SuperJMN/Avalonia,SuperJMN/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,AvaloniaUI/Avalonia,SuperJMN/Avalonia,grokys/Perspex,grokys/Perspex,SuperJMN/Avalonia,SuperJMN/Avalonia