pod 'NADocumentPicker' will Using NADocumentPicker (3.0.0)

[zhxf2012]

NADocumentPicker is really a good library,But via cocoapods come out with some trouble as follow

1.pod 'NADocumentPicker' will Using NADocumentPicker (3.0.0),I used cocoapods 1.7.5 and updated the repo ,Please update the NADocumentPicker.podspec in cocoapods .
2.Also I have tried
pod 'NADocumentPicker' ,git: 'https://github.com/NickAger/NADocumentPicker.git'

which get error
[!] CocoaPods could not find compatible versions for pod "NADocumentPicker":
In Podfile:
NADocumentPicker (from https://github.com/NickAger/NADocumentPicker.git)

Specs satisfying the NADocumentPicker (from https://github.com/NickAger/NADocumentPicker.git`)` dependency were found, but they required a higher minimum deployment target.

I use cocoapods 1.7.5 and my project set platform :ios, '11.4'

thank you for the lirbary, please fixed that problem. Thank you.