OSX information #8

README.md

@@ -33,6 +33,9 @@ Good mood
 
 Drag the CryptoSwift.xcodeproj file into your Xcode project, and add CryptoSwift.framework as a dependency for your target.
 
+#####iOS and OSX
+Bu default project is setup for iOS. You need to switch to OSX SDK manually [see #8](https://github.com/krzyzanowskim/CryptoSwift/issues/8)
+
 ##Usage
 
     import CryptoSwift