Added packages wp, helmet and base config to fetch data with graphql

gatsby-node.js

@@ -0,0 +1,22 @@
+const path = require('path')
+
+exports.createPages = ({ graphql, boundActionCreators }) => {
+  const { createPage } = boundActionCreators
+  return new Promise((resolve, reject) => {
+    graphql(
+      `
+        {
+          allWordpressPage {
+            edges {
+              node {
+                id
+                slug
+                title
+              }
+            }
+          }
+        }
+      `
+    )
+  })
+}