Update README.md

Author: ivanvorobei

README.md

@@ -1 +1,21 @@
 # SPQRCode
+
+<img src="https://user-images.githubusercontent.com/10995774/159240125-e95bdd73-63e8-42a7-b2fc-a3073f2d3f2b.PNG" height="550"/>
+
+Filter with handling data and simple example.
+
+```swift
+SPQRCode.scanning(
+  detect: { data in
+    switch data {
+    case .ethWallet(let address):
+      return data
+    default: return nil
+    }
+  }, 
+  handled: { data, controller in
+    controller.dismiss(animated: true)
+  },
+  on: self
+)
+```