Add a caption if it's not available
Better handling of captions
Use an anchor for the album link

Found a way to handle middle mouse clicks.
Better newlines and used another caption class
Notify user when unable to extract image data
Update readme to last changes
Fix newline in caption

When no extra info is available avoid double newlines.
Version 0.8

- Fix for galleries without captions
- Use a link to open the album instead of a button. It's now possible to
    use both left and middle click to open the album.
- Better formatting of captions