Changed the license from CC BY-SA to MIT. Bumped podspec to target version 1.1.9.
Added +registeredTransformer, to conveniently return an SORelativeDateTransformer instance globally cached by NSValueTransformer.
Example app now uses +[SORelativeDateTransformer registeredTransformer]. Comment cleanup.
Added tag 1.1.9 for changeset 16a7a6382390