Repeatable Meta Fields Not Saving

Hi Everyone!

Need some help from the community as i am new to the plugin development of WordPress.

I like to create a plugin for WordPress where i need a repeatable fields. But whenever i am saving the post the fields are not saving.

I am uploading the file to dropbox so that anyone can checkout the code. Here is the link – https://dl.dropboxusercontent.com/u/34202357/latest-news.zip

Please help.