added caveat to REST Files README
added caveat to REST Files README

assaframan/MoviesRestForAppHarbor,ServiceStack/ServiceStack.Examples,assaframan/MoviesRestForAppHarbor,ServiceStack/ServiceStack.Examples,zhaokunfay/ServiceStack.Examples,zhaokunfay/ServiceStack.Examples,zhaokunfay/ServiceStack.Examples,ServiceStack/ServiceStack.Examples,assaframan/MoviesRestForAppHarbor,ServiceStack/ServiceStack.Examples,zhaokunfay/ServiceStack.Examples