#15 Count total view

Create Viewable interface
Set Article as Viewable
Create ES client
Now view article increment view count
Create index on start application

add an extention in ApplicationCall, to get citizen or return null

src/test/resources/feature/articles.feature

@@ -1,3 +1,4 @@
+@article
 Feature: articles routes
 
   Scenario: The route for get articles must response a 200