* bundle_contents now appends 'Contents' without adding it twice.
* Remove reference to non-existent gdk-pixbuf.loaders
* Separate libtorrent in new module.
* Update lib versions for bundle file.
On Mavericks the application path passed to scripts only has single leading slash
compared to previous double slash.
Renamed and changed shebang to bash to prevent any issues.
Updated README to rst format for display in trac wiki.
