feat(guide): Import guide in to the client app

client/plugins/gatsby-remark-node-identity/gatsby-node.js

@@ -0,0 +1,16 @@
+exports.onCreateNode = ({ node, reporter }, { predicate, identity }) => {
+  if (typeof predicate !== 'function') {
+    reporter.panic(
+      'Please supply a predicate function to `gatsby-plugin-identity`'
+    );
+  }
+  if (typeof identity !== 'string' || identity.lenght === 0) {
+    reporter.panic(
+      '`gatsby-plugin-identity` requires an identify string to add to nodes ' +
+        'that match the predicate'
+    );
+  }
+  if (predicate(node)) {
+    node.internal.identity = identity;
+  }
+};

client/plugins/gatsby-remark-node-identity/package.json

@@ -0,0 +1 @@
+{"name": "gatsby-plugin-node-identity", "version": "0.1.0"}