diff --git a/Gemfile.lock b/Gemfile.lock
index c342f48..f4a4261 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,26 +1,60 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    albino (1.3.3)
-      posix-spawn (>= 0.3.6)
-    classifier (1.3.3)
-      fast-stemmer (>= 1.0.0)
-    directory_watcher (1.4.1)
-    fast-stemmer (1.0.1)
-    jekyll (0.11.2)
-      albino (~> 1.3)
-      classifier (~> 1.3)
-      directory_watcher (~> 1.1)
-      kramdown (~> 0.13)
-      liquid (~> 2.3)
-      maruku (~> 0.5)
-    kramdown (0.13.7)
-    liquid (2.3.0)
-    maruku (0.6.0)
-      syntax (>= 1.0.0)
-    posix-spawn (0.3.6)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.1.5)
+    em-websocket (0.5.1)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
+    ffi (1.11.1)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.6.0)
+    i18n (1.7.0)
+      concurrent-ruby (~> 1.0)
+    jekyll (4.0.0)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (>= 0.9.5, < 2)
+      jekyll-sass-converter (~> 2.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 2.1)
+      kramdown-parser-gfm (~> 1.0)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (~> 3.0)
+      safe_yaml (~> 1.0)
+      terminal-table (~> 1.8)
+    jekyll-sass-converter (2.0.1)
+      sassc (> 2.0.1, < 3.0)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    kramdown (2.1.0)
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    liquid (4.0.3)
+    listen (3.2.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.3.6)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (4.0.1)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    rouge (3.11.1)
+    safe_yaml (1.0.5)
     sass (3.1.20)
-    syntax (1.0.0)
+    sassc (2.2.1)
+      ffi (~> 1.9)
+    terminal-table (1.8.0)
+      unicode-display_width (~> 1.1, >= 1.1.1)
+    unicode-display_width (1.6.0)
 
 PLATFORMS
   ruby