title: How to decrease app size unity vuforia for iOS
body: <p>I have downloaded samples vuforia-samples-core-android-ios-unity-4-2-3.zip, open and build ImageTargets-4-2-3 for IOS. 
  Then I build app in Xcode. 
  The size of the app is 141,9 MB.
  How can I decrease the size of the app?
  Thanks!</p>