Adding iTunes Store RSS automation provider

The <a href="http://itunes.apple.com/rss">iTunes Store RSS Generator</a> allows you to create an RSS feed URL that reflects iTunes' top charts and new content, including <b>Top Movies</b> and <b>Top Video Rentals</b>. You can also specify Country, Genre (i.e. Comedy), and number of items to include in the results.

Similar to the IMDB watchlist automation provider, the <b>iTunes automation provider</b> allows you to configure and enable a set of iTunes generated urls to download new and popular content according to ITunes.

The iTunes automation provider respects the "Minimal movie requirements" (year/votes/ratings) to only add the items meeting those requirements. 

![Screen Shot 2012-12-31 at 5 35 21 PM](https://f.cloud.github.com/assets/1297859/37005/6b301faa-539a-11e2-8a6f-42ba8b4dd3ea.png)

For example, I have it configured to queue the following:
* Top Movies, 25 items, All Genres
* Top Video Rentals, 25 items. All Genres
* Top Video Rentals, 10 items, Comedies
* Minimum requirements: Year: 2010, Votes: 1, Ratings: 1