SHKFacebook error alerts presentation logic is fixed according to Facebook iOS SDK documentation https://developers.facebook.com/docs/ios/errors/
Merge pull request #821 from tkach/master

SHKFacebook error alerts presentation logic is fixed according to Facebook iOS SDK
BUGFIX: do not show no accounts alert when sharer.quiet is YES
REFACTORING: slightly simplified SHKFormOptionController and SHKFormFieldLargeTextSettings initialisers
Refactoring: SHKXMLResponseParser now creates proper NSDictionary with nested objects. Preserves original xml structure. Before it flattened the structure to contain all (even nested) elements in the root
BUGFIX: cancel on oauth authentication view always fired auth view again
NEW FEATURE: linked in can fetch user info
DOCUMENTATION UPDATE: support matrix