Add shouldRefetch to allowed options

Author: Floriferous

lib/checkOptions.js

@@ -10,6 +10,7 @@ export default function(options) {
         loadingComponent: Match.Maybe(Match.Any),
         dataProp: Match.Maybe(String),
         loadOnRefetch: Match.Maybe(Boolean),
+        shouldRefetch: Match.Maybe(Function),
     });
 
     if (options.reactive && options.poll) {