Not support Swift Package Manager


<img width="738" alt="Screenshot 2020-03-29 at 2 06 51 PM" src="https://user-images.githubusercontent.com/46016808/77845238-b3123680-71c6-11ea-8cf1-a14aed4ef1f1.png">

Package Resolution Failed
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: https://github.com/Fawxy/CBPinEntryView has no Package.swift manifest for version 1.7.1
