[NewBox] fixed deadlock

Xamarin.iOS 8.6.0.32
[NewBox] fix export move issue

Xamarin.iOS 8.6.0.32
[NewBox] added new elements to NBox extenison

Xamarin.iOS 8.6.0.32
[NewBox] fix issue with export move to NBox extension

Xamarin.iOS 8.6.0.32
[NewBox] fix doc picker menu issues

Xamarin.iOS 8.6.0.32
[NewBox] remove custom formating policy
[NewBox] looks like extensions must contain arm64 when running on device

Xamarin.iOS 8.6.0.32

Conflicts:
	ios8/NewBox/NBox/NBox.csproj
	ios8/NewBox/NBoxFileProvider/NBoxFileProvider.csproj
[NewBox] fix readme