Update development environment

Gemfile

@@ -4,6 +4,6 @@ group :development do
   gem "github-pages"
   gem "tzinfo-data"
 
-  gem "foreman",  "~> 0.63"
-  gem "serve",    "~> 1.5"
+  gem "foreman"
+  gem "serve"
 end

Gemfile.lock

@@ -2,76 +2,156 @@ GEM
   remote: https://rubygems.org/
   specs:
     RedCloth (4.2.9)
-    activesupport (3.2.14)
+    activesupport (3.2.22.5)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
-    classifier (1.3.3)
-      fast-stemmer (>= 1.0.0)
+    addressable (2.4.0)
+    blankslate (2.1.2.4)
+    classifier-reborn (2.1.0)
+      fast-stemmer (~> 1.0)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.12.2)
     colorator (0.1)
-    commander (4.1.5)
-      highline (~> 1.6.11)
-    directory_watcher (1.4.1)
-    dotenv (0.8.0)
+    ethon (0.10.1)
+      ffi (>= 1.3.0)
+    execjs (2.7.0)
+    faraday (0.10.1)
+      multipart-post (>= 1.2, < 3)
     fast-stemmer (1.0.2)
-    foreman (0.63.0)
-      dotenv (>= 0.7)
-      thor (>= 0.13.6)
-    github-pages (1)
+    ffi (1.9.14)
+    foreman (0.82.0)
+      thor (~> 0.19.1)
+    gemoji (2.1.0)
+    github-pages (39)
       RedCloth (= 4.2.9)
-      jekyll (= 1.1.2)
-      kramdown (= 1.0.2)
-      liquid (= 2.5.1)
-      maruku (= 0.6.1)
-      rdiscount (= 1.6.8)
-      redcarpet (= 2.2.2)
-    highline (1.6.19)
-    i18n (0.6.5)
-    jekyll (1.1.2)
-      classifier (~> 1.3)
+      github-pages-health-check (~> 0.2)
+      jekyll (= 2.4.0)
+      jekyll-coffeescript (= 1.0.1)
+      jekyll-feed (= 0.3.1)
+      jekyll-mentions (= 0.2.1)
+      jekyll-redirect-from (= 0.8.0)
+      jekyll-sass-converter (= 1.3.0)
+      jekyll-sitemap (= 0.8.1)
+      jemoji (= 0.5.0)
+      kramdown (= 1.5.0)
+      liquid (= 2.6.2)
+      maruku (= 0.7.0)
+      mercenary (~> 0.3)
+      pygments.rb (= 0.6.3)
+      rdiscount (= 2.1.7)
+      redcarpet (= 3.3.2)
+      terminal-table (~> 1.4)
+    github-pages-health-check (0.3.2)
+      net-dns (~> 0.6)
+      public_suffix (~> 1.4)
+      typhoeus (~> 0.7)
+    html-pipeline (1.9.0)
+      activesupport (>= 2)
+      nokogiri (~> 1.4)
+    i18n (0.7.0)
+    jekyll (2.4.0)
+      classifier-reborn (~> 2.0)
       colorator (~> 0.1)
-      commander (~> 4.1.3)
-      directory_watcher (~> 1.4.1)
-      kramdown (~> 1.0.2)
-      liquid (~> 2.5.1)
-      maruku (~> 0.5)
-      pygments.rb (~> 0.5.0)
-      redcarpet (~> 2.2.2)
-      safe_yaml (~> 0.7.0)
-    kramdown (1.0.2)
-    liquid (2.5.1)
-    maruku (0.6.1)
-      syntax (>= 1.0.0)
-    multi_json (1.7.9)
-    posix-spawn (0.3.6)
-    pygments.rb (0.5.2)
+      jekyll-coffeescript (~> 1.0)
+      jekyll-gist (~> 1.0)
+      jekyll-paginate (~> 1.0)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 1.1)
+      kramdown (~> 1.3)
+      liquid (~> 2.6.1)
+      mercenary (~> 0.3.3)
+      pygments.rb (~> 0.6.0)
+      redcarpet (~> 3.1)
+      safe_yaml (~> 1.0)
+      toml (~> 0.1.0)
+    jekyll-coffeescript (1.0.1)
+      coffee-script (~> 2.2)
+    jekyll-feed (0.3.1)
+    jekyll-gist (1.4.0)
+      octokit (~> 4.2)
+    jekyll-mentions (0.2.1)
+      html-pipeline (~> 1.9.0)
+      jekyll (~> 2.0)
+    jekyll-paginate (1.1.0)
+    jekyll-redirect-from (0.8.0)
+      jekyll (>= 2.0)
+    jekyll-sass-converter (1.3.0)
+      sass (~> 3.2)
+    jekyll-sitemap (0.8.1)
+    jekyll-watch (1.5.0)
+      listen (~> 3.0, < 3.1)
+    jemoji (0.5.0)
+      gemoji (~> 2.0)
+      html-pipeline (~> 1.9)
+      jekyll (>= 2.0)
+    kramdown (1.5.0)
+    liquid (2.6.2)
+    listen (3.0.8)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    maruku (0.7.0)
+    mercenary (0.3.6)
+    mini_portile2 (2.1.0)
+    multi_json (1.12.1)
+    multipart-post (2.0.0)
+    net-dns (0.8.0)
+    nokogiri (1.7.0.1)
+      mini_portile2 (~> 2.1.0)
+    octokit (4.6.2)
+      sawyer (~> 0.8.0, >= 0.5.3)
+    parslet (1.5.0)
+      blankslate (~> 2.0)
+    posix-spawn (0.3.12)
+    public_suffix (1.5.3)
+    pygments.rb (0.6.3)
       posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.1.0)
-    rack (1.5.2)
-    rack-test (0.6.2)
+      yajl-ruby (~> 1.2.0)
+    rack (1.5.5)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rdiscount (1.6.8)
-    redcarpet (2.2.2)
-    safe_yaml (0.7.1)
+    rb-fsevent (0.9.8)
+    rb-inotify (0.9.7)
+      ffi (>= 0.5.0)
+    rdiscount (2.1.7)
+    redcarpet (3.3.2)
+    safe_yaml (1.0.4)
+    sass (3.4.23)
+    sawyer (0.8.1)
+      addressable (>= 2.3.5, < 2.6)
+      faraday (~> 0.8, < 1.0)
     serve (1.5.2)
       activesupport (~> 3.2.12)
       i18n
       rack (~> 1.5.2)
       rack-test (~> 0.6.2)
       tilt (~> 1.3.3)
       tzinfo
-    syntax (1.0.0)
-    thor (0.18.1)
+    terminal-table (1.7.3)
+      unicode-display_width (~> 1.1.1)
+    thor (0.19.4)
+    thread_safe (0.3.5)
     tilt (1.3.7)
-    tzinfo (1.0.1)
-    tzinfo-data (1.2013.4)
+    toml (0.1.2)
+      parslet (~> 1.5.0)
+    typhoeus (0.8.0)
+      ethon (>= 0.8.0)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    tzinfo-data (1.2016.10)
       tzinfo (>= 1.0.0)
-    yajl-ruby (1.1.0)
+    unicode-display_width (1.1.2)
+    yajl-ruby (1.2.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  foreman (~> 0.63)
+  foreman
   github-pages
-  serve (~> 1.5)
+  serve
   tzinfo-data
+
+BUNDLED WITH
+   1.13.7

_config.yml

@@ -1,6 +1,6 @@
 baseurl: ''
 safe: true
-pygments: true
+highlighter: pygments
 lsi: false
 markdown: redcarpet
 exclude: