GrabKit v1.2

GrabKit v1.2 changelog :

* All Grabbers can now grab the data of the Cover of an album, and
build a GRKPhoto from it.
  Use the Two methods added to the GRKServiceGrabberProtocol, and
implemented in every grabber :
	* [GRKServiceGrabber
fillCoverPhotoOfAlbum:andCompleteBlock:andErrorBlock:];
	* [GRKServiceGrabber
fillCoverPhotoOfAlbums:andCompleteBlock:andErrorBlock:];

* GRKAlbum : Adding the property GRKPhoto * coverPhoto
* Facebook grabber : added grabbing of the "tagged photos" of the user.
* Facebook grabber : now uses batched queries
* Facebbok grabber : optimization when retrieving data of a photo
(loading only the needed data)
* GrabKit now includes the official release of Facebook iOS SDK 3.0
(not the beta version anymore)
* FlickR grabber : uses queued queries to retrieve covers of albums
(FlickR API doesn't offer batch methods)
* GrabKit now includes the last version of ObjectiveFlickR project
(fixing issue #5)
* Picasa grabber : uses queued queries to retrieve covers of albums
(Picasa API offers batch methods but they are totally unusable)
* Removed each specific kind of blocks to handle queries results
(GRKFacebookQueryHandlingBlock, GRKFlickrQueryHandlingBlock, …). These
blocks are replaced by GRKQueryResultBlock.
* GRKAlbum : the method "getDateForProperty:" is now "dateForProperty:"
* GRKPhoto : the method "getDateForProperty:" is now "dateForProperty:"
* adding KVO on property "count" of GRKAlbum (useful to notify changes
of this value, as services may return a wrong value)
* Update in Demo : more elegant squared cells with gray background when
a thumbnail is loading
* Update in Demo : list of albums now displays the albums' covers.
GrabKit v1.2

GrabKit v1.2 changelog :

* All Grabbers can now grab the data of the Cover of an album, and
build a GRKPhoto from it.
  Use the Two methods added to the GRKServiceGrabberProtocol, and
implemented in every grabber :
	* [GRKServiceGrabber
fillCoverPhotoOfAlbum:andCompleteBlock:andErrorBlock:];
	* [GRKServiceGrabber
fillCoverPhotoOfAlbums:andCompleteBlock:andErrorBlock:];

* GRKAlbum : Adding the property GRKPhoto * coverPhoto
* Facebook grabber : added grabbing of the "tagged photos" of the user.
* Facebook grabber : now uses batched queries
* Facebbok grabber : optimization when retrieving data of a photo
(loading only the needed data)
* GrabKit now includes the official release of Facebook iOS SDK 3.0
(not the beta version anymore)
* FlickR grabber : uses queued queries to retrieve covers of albums
(FlickR API doesn't offer batch methods)
* GrabKit now includes the last version of ObjectiveFlickR project
(fixing issue #5)
* Picasa grabber : uses queued queries to retrieve covers of albums
(Picasa API offers batch methods but they are totally unusable)
* Removed each specific kind of blocks to handle queries results
(GRKFacebookQueryHandlingBlock, GRKFlickrQueryHandlingBlock, …). These
blocks are replaced by GRKQueryResultBlock.
* GRKAlbum : the method "getDateForProperty:" is now "dateForProperty:"
* GRKPhoto : the method "getDateForProperty:" is now "dateForProperty:"
* adding KVO on property "count" of GRKAlbum (useful to notify changes
of this value, as services may return a wrong value)
* Update in Demo : more elegant squared cells with gray background when
a thumbnail is loading
* Update in Demo : list of albums now displays the albums' covers.