Merge pull request #43 from levigroker/master

#define added to the .h which allows conditional compilation for third parties wishing to conditionally add functionality based on the presence of SSZipArchive.

SSZipArchive.h

@@ -6,6 +6,9 @@
 //  Copyright (c) Sam Soffes 2010-2013. All rights reserved.
 //
 
+#ifndef _SSZIPARCHIVE_H
+#define _SSZIPARCHIVE_H
+
 #import <Foundation/Foundation.h>
 #include "minizip/unzip.h"
 
@@ -43,3 +46,5 @@
 - (void)zipArchiveDidUnzipFileAtIndex:(NSInteger)fileIndex totalFiles:(NSInteger)totalFiles archivePath:(NSString *)archivePath fileInfo:(unz_file_info)fileInfo;
 
 @end
+
+#endif /* _SSZIPARCHIVE_H */

SSZipArchive.podspec

@@ -10,6 +10,6 @@ Pod::Spec.new do |s|
   s.ios.deployment_target = '4.0'
   s.osx.deployment_target = '10.6'
   s.source_files = 'SSZipArchive.{h,m}', 'minizip/*.{h,c}'
-  s.preserve_paths = 'minizip'
+  s.header_dir = 'minizip'
   s.library      = 'z'
-end
+end