Enable asset compression

Gemfile

@@ -25,6 +25,7 @@ group :jekyll_plugins do
   gem 'jekyll-pants'
   gem 'jekyll-seo-tag'
   gem 'jekyll-sitemap'
+  gem 'uglifier' # required by 'jekyll-assets' for JS compression
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem

Gemfile.lock

@@ -219,6 +219,8 @@ GEM
       ethon (>= 0.8.0)
     tzinfo (1.2.3)
       thread_safe (~> 0.1)
+    uglifier (3.2.0)
+      execjs (>= 0.3.0, < 3)
     unicode-display_width (1.3.0)
 
 PLATFORMS
@@ -233,6 +235,7 @@ DEPENDENCIES
   rake
   rubocop
   tzinfo-data
+  uglifier
 
 BUNDLED WITH
    1.14.6

_config.yml

@@ -45,6 +45,9 @@ defaults:
 
 assets:
   digest: true
+  compress:
+    css: true
+    js: true
 
 markdown: kramdown
 kramdown: