new current_ruby-version var

_config.yml

@@ -49,14 +49,15 @@ social_image_path:  /assets/brand/bootstrap-social.png
 social_logo_path:   /assets/brand/bootstrap-social-logo.png
 
 # Custom variables
-current_version:    4.0.0-beta.2
-docs_version:       4.0
-repo:               "https://github.com/twbs/bootstrap"
-slack:              "https://bootstrap-slack.herokuapp.com"
-blog:               "https://blog.getbootstrap.com"
-expo:               "https://expo.getbootstrap.com"
-jobs:               "https://jobs.getbootstrap.com"
-themes:             "https://themes.getbootstrap.com"
+current_version:      4.0.0-beta.2
+current_ruby_version: 4.0.0-beta2
+docs_version:         4.0
+repo:                 "https://github.com/twbs/bootstrap"
+slack:                "https://bootstrap-slack.herokuapp.com"
+blog:                 "https://blog.getbootstrap.com"
+expo:                 "https://expo.getbootstrap.com"
+jobs:                 "https://jobs.getbootstrap.com"
+themes:               "https://themes.getbootstrap.com"
 
 download:
   source:           "https://github.com/twbs/bootstrap/archive/v4.0.0-beta.2.zip"

docs/4.0/getting-started/download.md

@@ -68,13 +68,13 @@ Bootstrap's `package.json` contains some additional metadata under the following
 Install Bootstrap in your Ruby apps using [Bundler](https://bundler.io/) (**recommended**) and [RubyGems](https://rubygems.org/) by adding the following line to your [`Gemfile`](https://bundler.io/gemfile.html):
 
 {% highlight ruby %}
-gem 'bootstrap', '~> {{ site.current_version }}'
+gem 'bootstrap', '~> {{ site.current_ruby_version }}'
 {% endhighlight %}
 
 Alternatively, if you're not using Bundler, you can install the gem by running this command:
 
 {% highlight sh %}
-gem install bootstrap -v {{ site.current_version }}
+gem install bootstrap -v {{ site.current_ruby_version }}
 {% endhighlight %}
 
 [See the gem's README](https://github.com/twbs/bootstrap-rubygem/blob/master/README.md) for further details.

index.html

@@ -41,7 +41,7 @@ npm install bootstrap@{{ site.current_version }}
 {% endhighlight %}
 
 {% highlight sh %}
-gem install bootstrap -v {{ site.current_version }}
+gem install bootstrap -v {{ site.current_ruby_version }}
 {% endhighlight %}
 
     <hr class="half-rule">