Add link to jekyll-algolia's documentation

docs/_posts/2017-11-28-post-exclude-search.md

@@ -3,10 +3,27 @@ title:  "Exclude Post from Search Index"
 search: false
 categories: 
   - Jekyll
+last_modified_at: 2018-02-19T08:06:00-05:00
 ---
 
 This post should not appear in the search index because it has the following YAML Front Matter:
 
 ```yaml
 search: false
+```
+
+**Note:** `search: false` only works to exclude post's when using Lunr as a search provider.
+{: .notice--info}
+
+To exclude files when using Algolia as a search provider add an array to `algolia.files_to_exclude` in your `_config.yml`. For more configuration options be sure to check their [full documentation](https://community.algolia.com/jekyll-algolia/options.html).
+
+```yaml
+algolia:
+  # Exclude more files from indexing
+  files_to_exclude:
+    - index.html
+    - index.md
+    - excluded-file.html
+    - _posts/2017-11-28-post-exclude-search.md
+    - subdirectory/*.html
 ```