Merge pull request #2218 from travisbloom/feature-return-storyshots-test

return the test in storyshots to respect promises.

addons/storyshots/src/index.js

@@ -88,7 +88,7 @@ export default function testStorySnapshots(options = {}) {
 
           it(story.name, () => {
             const context = { kind: group.kind, story: story.name };
-            options.test({ story, context });
+            return options.test({ story, context });
           });
         }
       });