Add a whitelist of known text MIME types
Add a whitelist of known text MIME types

Some MIME types may not have a corresponding UTI and thus can't conform to public.text

areedtomlinson/iOS-VCR,areedtomlinson/iOS-VCR-Deprecated,dstnbrkr/VCRURLConnection,foulkesjohn/VCRURLConnection,tclarkwilliam/VCRURLConnection,areedtomlinson/VCRURLConnection