Merge pull request #9 from ServerDriven/SDN-8-update-readme

Author: 0xLeif

README.md

@@ -1,3 +1,33 @@
 # ScreenDataNavigation
 
-Handling ScreenData's Destinations
+```swift
+// MARK: ScreenProviding
+// Provide ScreenDataUI with SomeScreen
+
+public protocol ScreenProviding {
+    func screen(forID id: String) -> AnyPublisher<SomeScreen, Error>
+}
+
+public struct MockScreenProvider: ScreenProviding {
+    // ...
+}
+
+public struct URLScreenProvider: ScreenProviding {
+    // ...
+}
+
+public struct UserDefaultScreenProvider: ScreenProviding {
+    // ...
+}
+
+// MARK: ScreenStoring
+// Store SomeScreens for later
+
+public protocol ScreenStoring {
+    func store(screens: [SomeScreen]) -> AnyPublisher<Void, Error>
+}
+
+public struct UserDefaultScreenStorer: ScreenStoring {
+    // ...
+}
+```