Fixed Memory leaks in the plugin file.
Fixed Memory Leak Issue for EziFacebookUser Class. Now object is marked as auto release object and developer need not to worry about releasing this object. However, developer needs to make sure that object is added to a Scene to retain the values.

Also copyWithZone method is added in case if user like to store the object in CCArray or CCDictionary then it is useful.
sharedRequestManager is marked as NULL in the destructor method.