Support Dropbox and Box.net for AntTek Explorer

Notice:
- Must install AntTek File Explorer to use this plugin. (Play store: http://bit.ly/anttekexplorer)
- No icon on your launcher.

Features:
- Easy to configure
- Seamlessly browse Dropbox/Box.net storage
- Streaming music, video from server
- View image, document (pdf, doc) inline
- AntTek Explorer is a free Drag & Drop anywhere file explorer with custom panel layouts