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README.md

@@ -144,6 +144,9 @@ You can use [Swift Package Manager](https://swift.org/package-manager/) and spec
 * [Rabbit](#rabbit)
 * [Advanced Encryption Standard (AES)](#aes)
 
+
+also check [Playground](/CryptoSwift.playground/Contents.swift)
+
 #####Basics
 
 ```swift
@@ -273,6 +276,8 @@ ciphertext += try encryptor.update(withBytes: "ornare vel eu leo.".utf8.map({$0}
 ciphertext += try encryptor.finish()
 ```
 
+See [Playground](/CryptoSwift.playground/Contents.swift) for sample code to work with streams.
+
 Check this helper functions to work with **Base64** encoded data directly:
 - .decryptBase64ToString()
 - .toBase64()