Update unity plugin to work with Unity 5

.gitignore

@@ -2,7 +2,6 @@
 [Tt]emp/
 [Oo]bj/
 
-*.meta
 *.pyc
 
 # Autogenerated VS/MD solution and project files

Assets/Editor/PostprocessBuildPlayer_Amplitude

@@ -2,10 +2,8 @@
 
 import os, sys
 import subprocess
-import objc_helper
-import os_helper
 import glob
-from mod_pbxproj import XcodeProject
+import re
 from subprocess import call
 
 argv = sys.argv
@@ -21,29 +19,27 @@ editorFolder                = os.path.split(scriptName)[0]
 assetsFolder                = os.path.split(editorFolder)[0]
 app_controller_helper_path  = os.path.join(installPath, "Libraries/AppControllerHelper.h")
 
-if player == 'iPhone':
-
+def rewrite_unity_xcode_project(unity_xcode_project_path):
   #
-  #   Copying Libraries
+  #		Setting GCC Objective C exceptions to TRUE
   #
-  amplitudeLocation = os.path.join(assetsFolder, "Plugins/iOS/Amplitude")
-  newAmplitudeLocation = os.path.join(installPath, "Classes")
-  os_helper.copy(amplitudeLocation, newAmplitudeLocation)
 
+  unity_xcode_lines = []
+  # allow objective-c exceptions
+  re_objc_excep = re.compile(r"\s*GCC_ENABLE_OBJC_EXCEPTIONS *= *NO.*")
+  with open(unity_xcode_project_path) as upf:
+    for line in upf:
+      if re_objc_excep.match(line):
+        print "matched line: {0}", re_objc_excep.match(line).group()
+        line = line.replace("NO","YES")
+        print "Objective-c exceptions enabled"
+      unity_xcode_lines.append(line)
+  with open(unity_xcode_project_path, "w+") as upf:
+    upf.writelines(unity_xcode_lines)
+
+if player == 'iPhone':
   #
   #   Modifying the XCode project, messy!
   #
   pbxProjPath = os.path.join(installPath, "Unity-iPhone.xcodeproj/project.pbxproj")
-  project = XcodeProject.Load(pbxProjPath)
-  classes = project.get_or_create_group('Classes')
-  amplitude = project.get_or_create_group('Amplitude', path='Amplitude', parent=classes, tree='<group>')
-  for f in sorted(glob.glob(newAmplitudeLocation + '/Amplitude/*.[hm]')):
-    project.add_file(os.path.basename(f), parent=amplitude, tree='<group>')
-
-  project.add_file('System/Library/Frameworks/UIKit.framework', tree='SDKROOT')
-  project.save()
-
-  #
-  #		Setting GCC Objective C exceptions to TRUE
-  #
-  objc_helper.set_flag(pbxProjPath, "GCC_ENABLE_OBJC_EXCEPTIONS", "YES")
+  rewrite_unity_xcode_project(pbxProjPath)