Add a how to add search to your website section

docs/docs/adding-search.md

@@ -0,0 +1,18 @@
+---
+title: "Adding search to your Gatsby website"
+---
+
+There are few ways to approach adding search to your Gatsby-powered site:
+
+1. You can use libraries such as [elesticlunr][1] for offline search but doing so will require you to index at build time. Fortunately, this is achievable using the [gatsby-plugin-elasticlunr-search][2] plugin
+
+2. If you're building a website for your documentation, you can use the [Algolia docs][3] feature--it  scrapes the dom and builds the search index automatically. After that, you'll need to implement your own [search ui][4].
+
+3. Use Algolia to collect the search index at build time and upload it to using [gatsby-plugin-algolia][5].
+
+
+  [1]: https://www.npmjs.com/package/elasticlunr
+  [2]: https://github.com/andrew-codes/gatsby-plugin-elasticlunr-search
+  [3]: https://www.algolia.com/doc/
+  [4]: https://www.algolia.com/doc/paths/build-search-ui/
+  [5]: https://github.com/algolia/gatsby-plugin-algolia

www/src/pages/docs/doc-links.yaml

@@ -80,6 +80,8 @@
       link: /docs/creating-dynamically-rendered-navigation/
     - title: Dropping Images into Static Folders*
       link: /docs/dropping-images-into-static-folders/
+    - title: Adding search to your Gatsby website
+      link: /docs/adding-search/
 - title: Reference
   items:
     - title: Node Interface