Whenever a file you upload is rejected, you should get an automated email with the comment the moderator who rejected your file entered. Make sure your email provider isn't sending the messages to your junk/spam folder.
MACOSX folders were found in your file. This creates extra files when unzipping on non-OS X computers. Please re-zip your project without including such folders and re-upload. Please review the File Statuses knowledge base located here: http://kb.curseforge.com/projects/file-statuses/
Use a real compression program like 7Zip, WinRAR, or even WinZIP, not the crappy half-assed version built into your operating system. Any decent progam will let you view the contents of an archive (such as the ZIP file you made for your addon) and delete files directly from the archive.