upgrade gems

Gemfile.lock

@@ -1,50 +1,60 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    colorator (0.1)
-    ffi (1.9.14)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
+    colorator (1.1.0)
+    ffi (1.9.18)
+    forwardable-extended (2.6.0)
     go_script (0.1.9)
       bundler (~> 1.10)
       safe_yaml (~> 1.0)
-    guides_style_18f (0.4.9)
-      jekyll
+    guides_style_18f (2.0.1)
+      jekyll (~> 3.3)
       jekyll_pages_api
       jekyll_pages_api_search
-      rouge
-      sass
     htmlentities (4.3.4)
-    jekyll (3.1.6)
-      colorator (~> 0.1)
+    jekyll (3.6.2)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
-      kramdown (~> 1.3)
-      liquid (~> 3.0)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
       mercenary (~> 0.3.3)
-      rouge (~> 1.7)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 3)
       safe_yaml (~> 1.0)
-    jekyll-sass-converter (1.4.0)
+    jekyll-sass-converter (1.5.0)
       sass (~> 3.4)
-    jekyll-watch (1.4.0)
+    jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
     jekyll_pages_api (0.1.6)
       htmlentities (~> 4.3)
       jekyll (>= 2.0, < 4.0)
     jekyll_pages_api_search (0.4.4)
       jekyll_pages_api (~> 0.1.4)
       sass (~> 3.4)
-    kramdown (1.11.1)
-    liquid (3.0.6)
+    kramdown (1.15.0)
+    liquid (4.0.0)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
-    rb-fsevent (0.9.7)
-    rb-inotify (0.9.7)
-      ffi (>= 0.5.0)
-    redcarpet (3.3.4)
-    rouge (1.11.1)
+    pathutil (0.16.0)
+      forwardable-extended (~> 2.6)
+    public_suffix (3.0.0)
+    rb-fsevent (0.10.2)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
+    redcarpet (3.4.0)
+    rouge (2.2.1)
     safe_yaml (1.0.4)
-    sass (3.4.22)
+    sass (3.5.3)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
 
 PLATFORMS
   ruby
@@ -57,4 +67,4 @@ DEPENDENCIES
   rouge
 
 BUNDLED WITH
-   1.12.5
+   1.15.4

_config.yml

@@ -9,6 +9,8 @@ exclude:
 - go
 - vendor
 
+theme: guides_style_18f
+
 permalink: pretty
 highlighter: rouge
 incremental: true
@@ -66,7 +68,7 @@ repos:
   url: https://github.com/18F/guides-template
 
 back_link:
-  url: "https://pages.18f.gov/guides/"
+  url: https://guides.18f.gov/
   text: Read more 18F Guides
 
 google_analytics_ua: UA-48605964-19
@@ -80,7 +82,7 @@ defaults:
 - scope:
     path: ""
   values:
-    layout: "guides_style_18f_default"
+    layout: default
 
 # Configuration for jekyll_pages_api_search plugin gem.
 jekyll_pages_api_search: