Create class to represent enclosures#36

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shavingyaks wants to merge 2 commits intomwaterfall:masterfrom

shavingyaks:enclosure-class

Commits on Oct 5, 2011

Added new class (MWFeedItemEnclosure) to represent feed enclosures.
shavingyaks
committed

Commits on Oct 8, 2011

Fixed bug where the MWFeedItemEnclosure url property was created as a NSURL instead of NSString.
shavingyaks
committed