0.0.3

new additions:

* *refactor* code to use `<img src>` tags instead of `<div>` with background images, which fixes Firefox and IE issues.
* *update* built-in lightbox UI to use `<img>` tags and has a new 'close' button
* *new* optional parameter `likes` allows user to include like count for images with at least *one* like.
* *new* optional parameter `likesHover` shows number of likes only when the user hovers over the image