[Hooks] Minor clean up.

lib/cocoapods/hooks/library_representation.rb

@@ -26,9 +26,10 @@ module Pod
 
       # @return [Pathname] The path of the prefix_header
       #
-      def prefix_header_filename
+      def prefix_header_path
         library.prefix_header_path
       end
+      alias :prefix_header_filename :prefix_header_path
 
       # @return [Pathname] The path of the script used to copy the resources.
       #

spec/unit/hooks/library_representation_spec.rb

@@ -28,7 +28,7 @@ module Pod
 
       it "returns the path of the prefix header" do
         @lib.support_files_root = temporary_directory
-        @rep.prefix_header_filename.should == temporary_directory + 'Pods-MyApp-prefix.pch'
+        @rep.prefix_header_path.should == temporary_directory + 'Pods-MyApp-prefix.pch'
       end
 
       it "returns the path of the copy resources script" do