add info about POP in README

Author: cbaker6

CONTRIBUTING.md

@@ -119,7 +119,7 @@ Currently, we are not making use of the commit _scope_, which would be written a
 
 ## Evolution
 
-It's not intended as a port of the Parse Objective-c SDK and has many new philosophies. Please see [this thread](https://github.com/parse-community/Parse-Swift/issues/3) for a detailed discussion about the intended evolution of this SDK.
+The ParseSwift SDK is not a port of the [Parse-SDK-iOS-OSX SDK](https://github.com/parse-community/Parse-SDK-iOS-OSX) and though some of it may feel familiar, it is not backwards compatible and is designed using [protocol oriented programming (POP) and value types](https://www.pluralsight.com/guides/protocol-oriented-programming-in-swift) instead of OOP and reference types. You can learn more about POP by watching [this](https://developer.apple.com/videos/play/wwdc2015/408/) or [that](https://developer.apple.com/videos/play/wwdc2016/419/) videos from previous WWDC's. Please see [this thread](https://github.com/parse-community/Parse-Swift/issues/3) for a detailed discussion about the intended evolution of this SDK.
 
 ## Code of Conduct
 

README.md

@@ -26,7 +26,7 @@
 
 A pure Swift library that gives you access to the powerful Parse Server backend from your Swift applications.
 
-For more information about the Parse Platform and its features, see the public [documentation][docs]. The ParseSwift SDK is not a port of the [Parse-SDK-iOS-OSX SDK](https://github.com/parse-community/Parse-SDK-iOS-OSX) and though some of it may feel familiar, it is not backwards compatible and is designed with a new philosophy. For more details visit the [api documentation](http://parseplatform.org/Parse-Swift/api/).
+For more information about the Parse Platform and its features, see the public [documentation][docs]. The ParseSwift SDK is not a port of the [Parse-SDK-iOS-OSX SDK](https://github.com/parse-community/Parse-SDK-iOS-OSX) and though some of it may feel familiar, it is not backwards compatible and is designed using [protocol oriented programming (POP) and value types](https://www.pluralsight.com/guides/protocol-oriented-programming-in-swift) instead of OOP and reference types. You can learn more about POP by watching [this](https://developer.apple.com/videos/play/wwdc2015/408/) or [that](https://developer.apple.com/videos/play/wwdc2016/419/) videos from previous WWDC's. For more details about ParseSwift, visit the [api documentation](http://parseplatform.org/Parse-Swift/api/).
 
 To learn how to use or experiment with ParseSwift, you can run and edit the [ParseSwift.playground](https://github.com/parse-community/Parse-Swift/tree/main/ParseSwift.playground/Pages). You can use the parse-server in [this repo](https://github.com/netreconlab/parse-hipaa/tree/parse-swift) which has docker compose files (`docker-compose up` gives you a working server) configured to connect with the playground files, has [Parse Dashboard](https://github.com/parse-community/parse-dashboard), and can be used with MongoDB or PostgreSQL. You can also configure the Swift Playgrounds to work with your own Parse Server by editing the configuation in [Common.swift](https://github.com/parse-community/Parse-Swift/blob/e9ba846c399257100b285d25d2bd055628b13b4b/ParseSwift.playground/Sources/Common.swift#L4-L19). To learn more, check out [CONTRIBUTING.md](https://github.com/parse-community/Parse-Swift/blob/main/CONTRIBUTING.md#swift-playgrounds).
 
@@ -57,7 +57,7 @@ import PackageDescription
 let package = Package(
     name: "YOUR_PROJECT_NAME",
     dependencies: [
-        .package(url: "https://github.com/parse-community/Parse-Swift", from: "3.1.2"),
+        .package(url: "https://github.com/parse-community/Parse-Swift", from: "4.0.0"),
     ]
 )
 ```