I was digging into the plugin code and I see that you're currently just scraping content from the HTML side for each plugin. Though this works, WP actually provides an API for retrieving info about plugins.
Though the method you're using currently works, it's a little less efficient and prone to breaking if WP ever changes their design. The API is documented and will always return what you expect.
Just my 2 cents :)
(I love the plugin, btw!)