Update carthage instructions

nuclearace · nuclearace · commit 319fca02276d · 2017-07-25T19:48:20.000-04:00
diff --git a/README.md b/README.md
@@ -88,6 +88,7 @@ Then import `import SocketIO`.
 ### Carthage
 Add this line to your `Cartfile`:
 ```
+github "nuclearace/Starscream" ~> 8.0.1
 github "socketio/socket.io-client-swift" ~> 11.0.0 # Or latest version
 ```
 
