This revision includes the following changes:

 - [1] The plugin home page has been changed over from the old style to the new minimalist search and explore style
 - [2] The General class will now generate book cover images for search results to a different size
 - [3] The search.php page was created for AJAX to call when performing a search on the plugin home page
 - [4] The IndexDen class was added to allow the application to communicate with the IndexDen search engine. At this point, the class can only perform searches, and combine that retrieved data with information retrieved from the local database.
 - [5] The Book_Courses class was added and can currently fetch all Arts and Letters courses and all Science, Engineering, and Mathematics courses, and fetch the total number of books avaliable in each
 - [6] The Book_Overview class was added and it can currently retrieve the total number of books avaliable across the entire exchange