My environment is:
SO: OSX 10.11.5
Unity: 5.3.3f1
XCode: 7.3.1
I followed the guide https://developers.google.com/analytics/devguides/collection/unity/v4/devguide#ios
I did point 2 and 3.
But the script PostprocessBuildPlayer_GA didn't add the frameworks and libs in the Unity-iPhone.xcodeproj/project.pbxproj file.
In my environment the llbs libz.dylib and libsqlite3.dylib didn't exist (see issue #131).
The problem is not the wrongs libs, because I tried to fix with the correct libs (libz.tbd, libsqlite3.tbd) but did't work.