Upgrade Unity to 2017.1.1 (#57)

Author: karimnaaji

circle.yml

@@ -6,7 +6,7 @@ machine:
     XCODE_SCHEME: phony
   pre:
     # grab a current link from: http://unity3d.com/get-unity/download/archive
-    - curl -o Unity.pkg http://netstorage.unity3d.com/unity/2860b30f0b54/MacEditorInstaller/Unity-5.6.1f1.pkg
+    - curl -o Unity.pkg https://netstorage.unity3d.com/unity/5d30cf096e79/MacEditorInstaller/Unity-2017.1.1f1.pkg
     - sudo installer -dumplog -package Unity.pkg -target /
 test:
   override: