Make the installer work with the refactored Xcode::Project.

lib/cocoapods/installer.rb

@@ -52,19 +52,19 @@ module Pod
       build_specification_sets.each do |set|
         spec = set.specification
         xcconfig.merge!(spec.xcconfig)
-        xcodeproj.add_group(spec.name)
+        group = xcodeproj.add_pod_group(spec.name)
 
         # Only add implementation files to the compile phase
         spec.implementation_files.each do |file|
-          xcodeproj.add_source_file(file, spec.name, nil, spec.compiler_flags)
+          group.add_source_file(file, nil, spec.compiler_flags)
         end
 
         # Add header files to a `copy header build phase` for each destination
         # directory in the pod's header directory.
         set.specification.copy_header_mappings.each do |header_dir, files|
-          copy_phase_uuid = xcodeproj.add_copy_header_build_phase(spec.name, header_dir)
+          copy_phase = xcodeproj.add_copy_header_build_phase(spec.name, header_dir)
           files.each do |file|
-            xcodeproj.add_source_file(file, spec.name, copy_phase_uuid)
+            group.add_source_file(file, copy_phase)
           end
         end
 

lib/cocoapods/xcode/project.rb

@@ -130,6 +130,11 @@ module Pod
         alias_method :file_uuids, :files
         alias_method :file_uuids=, :files=
 
+        def initialize(project, uuid, attributes)
+          super
+          self.file_uuids ||= []
+        end
+
         def files
           list_by_class(file_uuids, PBXBuildFile)
         end
@@ -307,7 +312,7 @@ module Pod
            "runOnlyForDeploymentPostprocessing" => "0",
         })
         targets.first.buildPhases << phase
-        phase.uuid
+        phase
       end
 
       # A silly hack to pretty print the objects hash from MacRuby.

spec/unit/xcode/project_spec.rb

@@ -144,14 +144,14 @@ describe "Pod::Xcode::Project" do
   end
 
   it "creates a copy build header phase which will copy headers to a specified path" do
-    phase_uuid = @project.add_copy_header_build_phase("SomePod", "Path/To/Source")
+    phase = @project.add_copy_header_build_phase("SomePod", "Path/To/Source")
     find_object({
       'isa' => 'PBXCopyFilesBuildPhase',
       'dstPath' => '$(PUBLIC_HEADERS_FOLDER_PATH)/Path/To/Source',
       'name' => 'Copy SomePod Public Headers'
     }).should.not == nil
     target = @project.targets.first
-    target.attributes['buildPhases'].should.include phase_uuid
+    target.attributes['buildPhases'].should.include phase.uuid
   end
 
   it "adds a `h' file as a build file and adds it to the `headers build' phase list" do