Add pagination

src/templates/index-template.test.js

@@ -45,7 +45,11 @@ describe('IndexTemplate', () => {
       }
     },
     pageContext: {
-      page: 1
+      currentPage: 1,
+      prevPagePath: '/page/1',
+      nextPagePath: '/page/3',
+      hasNextPage: true,
+      hasPrevPage: true
     }
   };