0.8.0: Prep for dotorg release:

Added

• Add jamiemchale as a contributor.

Changed

• Use jQuery.on() instead of jQuery.live(). Props jamiemchale.
• Pass an empty array as default second parameter of taxonomy_images_plugin_get_the_terms() and taxonomy_images_plugin_list_the_terms().
• Give the button on the custom admin screen a class of button-primary.
• Store the return value of get_posts() in a variable called $images. Not sure why, but this should not harm anything.
• Change license to GPLv2 or later for maximum flexibility and compatibility.
• Random whitespace fixes.
• Update Documentation.
• CSS coding standards.
• Bump version number.
• Update readme files.