Add notice for fixing Unknown tag 'include_cached'

Fixes #1875

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ### Enhancements
 
-- Cache "static" includes to improve build performance. [#1874](https://github.com/mmistakes/minimal-mistakes/pull/1874)
+- Cache "static" includes to improve build performance. **Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build. [#1874](https://github.com/mmistakes/minimal-mistakes/pull/1874)
 - Make entire feature and archive items "clickable". [#1864](https://github.com/mmistakes/minimal-mistakes/pull/1864)
 - Allow custom Staticman endpoints. [#1842](https://github.com/mmistakes/minimal-mistakes/issues/1842)
 - Remove `type="text/css"` from Algolia script includes. [#1836](https://github.com/mmistakes/minimal-mistakes/pull/1836)

README.md

@@ -72,6 +72,8 @@ Additional sample posts are available under [posts archive][year-archive] on the
 
 There are three ways to install the theme: as a Ruby gem (for self-hosted sites), as a Ruby gem + jekyll-remote-theme plugin (GitHub Pages hosted sites), or forking/directly copying all of the theme files into your project.
 
+**Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build.
+
 ### Ruby Gem Method
 
 1. Install the theme as a Ruby Gem by adding it to your `Gemfile` like so:

docs/_docs/01-quick-start-guide.md

@@ -2,7 +2,7 @@
 title: "Quick-Start Guide"
 permalink: /docs/quick-start-guide/
 excerpt: "How to quickly install and setup Minimal Mistakes for use with GitHub Pages."
-last_modified_at: 2018-07-19T11:31:38-04:00
+last_modified_at: 2018-10-04T20:15:56-04:00
 redirect_from:
   - /theme-setup/
 toc: true
@@ -19,6 +19,9 @@ If you're running Jekyll v3.5+ and self-hosting you can quickly install the them
 **ProTip:** Be sure to remove `/docs` and `/test` if you forked Minimal Mistakes. These folders contain documentation and test pages for the theme and you probably don't want them littering up your repo.
 {: .notice--info}
 
+**Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build.
+{: .notice--warning}
+
 ### Ruby Gem Method
 
 Add this line to your Jekyll site's `Gemfile`:

docs/_docs/03-installation.md

@@ -2,7 +2,7 @@
 title: "Installation"
 permalink: /docs/installation/
 excerpt: "Instructions for installing the theme for new and existing Jekyll based sites."
-last_modified_at: 2018-03-20T15:59:00-04:00
+last_modified_at: 2018-10-04T20:16:07-04:00
 toc: true
 ---
 
@@ -21,6 +21,9 @@ If you plan to host with GitHub Pages be sure to properly setup [**jekyll-remote
 **ProTip:** Be sure to remove `/docs` and `/test` if you forked or downloaded Minimal Mistakes. These folders contain documentation and test pages for the theme and you probably don't littering up in your repo.
 {: .notice--info}
 
+**Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build.
+{: .notice--warning}
+
 ## Theme Migration
 
 To move over any existing content you'll want to copy the contents of your `_posts` folder to the new site. Along with any pages, collections, data files, images, or other assets you may have.
@@ -80,6 +83,7 @@ gem "minimal-mistakes-jekyll"
 #   gem "jekyll-feed"
 #   gem "jemoji"
 #   gem "jekyll-data"
+#   gem "jekyll-include-cache"
 #
 # If you have any other plugins, put them here!
 group :jekyll_plugins do
@@ -95,7 +99,7 @@ To maintain a local Jekyll environment in sync with GitHub Pages replace the `ge
 $ bundle install
 ```
 
-**Note:** The [GitHub Pages gem](https://github.com/github/pages-gem) installs additional dependencies that may need to be added to your `Gemfile` if you decide to remove the `gem "github-pages"` eg. `jekyll-paginate`, `jekyll-sitemap`, `jekyll-feed`, etc.
+**Note:** The [GitHub Pages gem](https://github.com/github/pages-gem) installs additional dependencies that may need to be added to your `Gemfile` if you decide to remove the `gem "github-pages"` eg. `jekyll-paginate`, `jekyll-sitemap`, `jekyll-feed`, `jekyll-include-cache`, etc.
 {: .notice--warning}
 
 <figure>

docs/_docs/05-configuration.md

@@ -2,7 +2,7 @@
 title: "Configuration"
 permalink: /docs/configuration/
 excerpt: "Settings for configuring and customizing the theme."
-last_modified_at: 2018-08-15T09:50:11-04:00
+last_modified_at: 2018-10-04T20:15:46-04:00
 toc: true
 ---
 
@@ -494,6 +494,7 @@ For faster and more relevant search ([see demo](https://mmistakes.github.io/mini
      gem "jekyll-seo-tag"
      gem "jekyll-sitemap"
      gem "jekyll-paginate"
+     gem "jekyll-include-cache"
      gem "jekyll-algolia"
    end
    ```
@@ -893,22 +894,27 @@ timezone: America/New_York
 
 When hosting with GitHub Pages a small [set of gems](https://pages.github.com/versions/) have been whitelisted for use. The theme uses a few of them which can be found under `gems`. Additional settings and configurations are documented in the links below.
 
-| Plugin                             | Description                                                                               |
-| ---------------------------------- | ----------------------------------------------------------------------------------------- |
-| [jekyll-paginate][jekyll-paginate] | Pagination Generator for Jekyll.                                                          |
-| [jekyll-sitemap][jekyll-sitemap]   | Jekyll plugin to silently generate a sitemaps.org compliant sitemap for your Jekyll site. |
-| [jekyll-gist][jekyll-gist]         | Liquid tag for displaying GitHub Gists in Jekyll sites.                                   |
-| [jekyll-feed][jekyll-feed]         | A Jekyll plugin to generate an Atom (RSS-like) feed of your Jekyll posts.                 |
-| [jemoji][jemoji]                   | GitHub-flavored emoji plugin for Jekyll.                                                  |
+| Plugin | Description                                                                               |
+| --- | --- |
+| [jekyll-paginate][jekyll-paginate] | Pagination Generator for Jekyll. |
+| [jekyll-sitemap][jekyll-sitemap] | Jekyll plugin to silently generate a sitemaps.org compliant sitemap for your Jekyll site. |
+| [jekyll-gist][jekyll-gist] | Liquid tag for displaying GitHub Gists in Jekyll sites. |
+| [jekyll-feed][jekyll-feed] | A Jekyll plugin to generate an Atom (RSS-like) feed of your Jekyll posts. |
+| [jemoji][jemoji] | GitHub-flavored emoji plugin for Jekyll. |
+| [jekyll-include-cache][jekyll-include-cache] | Liquid tag that caches Liquid includes. |
 
 [jekyll-paginate]: https://github.com/jekyll/jekyll-paginate
 [jekyll-sitemap]: https://github.com/jekyll/jekyll-sitemap
 [jekyll-gist]: https://github.com/jekyll/jekyll-gist
 [jekyll-feed]: https://github.com/jekyll/jekyll-feed
 [jemoji]: https://github.com/jekyll/jemoji
+[jekyll-include-cache]: https://github.com/benbalter/jekyll-include-cache
 
 If you're hosting elsewhere then you don't really have to worry about what is whitelisted as you are free to include whatever [Jekyll plugins](https://jekyllrb.com/docs/plugins/) you desire.
 
+**Note:** The [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin needs to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build.
+{: .notice--warning}
+
 ## Archive Settings
 
 The theme ships with support for taxonomy (category and tag) pages. GitHub Pages hosted sites need to use a _Liquid only_ approach while those hosted elsewhere can use plugins like [**jekyll-archives**][jekyll-archives] to generate these pages automatically.

docs/_docs/18-history.md

@@ -4,15 +4,15 @@ permalink: /docs/history/
 excerpt: "Change log of enhancements and bug fixes made to the theme."
 sidebar:
   nav: docs
-last_modified_at: 2018-10-04T15:41:33-04:00
+last_modified_at: 2018-10-04T20:16:47-04:00
 toc: true
 ---
 
 ## Unreleased
 
 ### Enhancements
 
-- Cache "static" includes to improve build performance. [#1874](https://github.com/mmistakes/minimal-mistakes/pull/1874)
+- Cache "static" includes to improve build performance. **Note:** The theme uses the [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) plugin which will need to be installed in your `Gemfile` and added to the `plugins` array of `_config.yml`. Otherwise you'll throw `Unknown tag 'include_cached'` errors at build. [#1874]
 - Make entire feature and archive items "clickable". [#1864](https://github.com/mmistakes/minimal-mistakes/pull/1864)
 - Allow custom Staticman endpoints. [#1842](https://github.com/mmistakes/minimal-mistakes/issues/1842)
 - Remove `type="text/css"` from Algolia script includes. [#1836](https://github.com/mmistakes/minimal-mistakes/pull/1836)