diff --git a/Gemfile.lock b/Gemfile.lock
index 82ee853..a8534db 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,16 +1,16 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.7)
+    activesupport (5.0.4)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
-    autoprefixer-rails (6.7.7.2)
+    addressable (2.5.1)
+      public_suffix (~> 2.0, >= 2.0.2)
+    autoprefixer-rails (7.1.1.2)
       execjs
-    backports (3.6.8)
+    backports (3.8.0)
     coderay (1.1.1)
     coffee-script (2.4.1)
       coffee-script-source
@@ -18,9 +18,9 @@ GEM
     coffee-script-source (1.12.2)
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
-    concurrent-ruby (1.0.2)
+    concurrent-ruby (1.0.5)
     contracts (0.13.0)
-    dotenv (2.1.1)
+    dotenv (2.2.1)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -28,43 +28,42 @@ GEM
     eventmachine (1.2.0.1)
     execjs (2.7.0)
     fast_blank (1.0.0)
-    fastimage (2.0.0)
-      addressable (~> 2)
-    ffi (1.9.14)
-    haml (4.0.7)
+    fastimage (2.1.0)
+    ffi (1.9.18)
+    haml (5.0.1)
+      temple (>= 0.8.0)
       tilt
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
-    hashie (3.4.4)
+    hashie (3.5.5)
     htmlcompressor (0.2.0)
     http_parser.rb (0.6.0)
     i18n (0.7.0)
-    json (1.8.3)
-    kramdown (1.11.1)
+    kramdown (1.13.2)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    memoist (0.14.0)
+    memoist (0.16.0)
     method_source (0.8.2)
-    middleman (4.1.10)
+    middleman (4.1.14)
       coffee-script (~> 2.2)
       compass-import-once (= 1.0.5)
       haml (>= 4.0.5)
       kramdown (~> 1.2)
-      middleman-cli (= 4.1.10)
-      middleman-core (= 4.1.10)
+      middleman-cli (= 4.1.14)
+      middleman-core (= 4.1.14)
       sass (>= 3.4.0, < 4.0)
-    middleman-autoprefixer (2.7.0)
-      autoprefixer-rails (>= 6.3.1, < 7.0.0)
+    middleman-autoprefixer (2.8.0)
+      autoprefixer-rails (>= 7.0.1, < 8.0.0)
       middleman-core (>= 3.3.3)
     middleman-blog (4.0.1)
       addressable (~> 2.3)
       middleman-core (>= 4.0.0)
       tzinfo (>= 0.3.0)
-    middleman-cli (4.1.10)
+    middleman-cli (4.1.14)
       thor (>= 0.17.0, < 2.0)
-    middleman-core (4.1.10)
-      activesupport (~> 4.2)
+    middleman-core (4.1.14)
+      activesupport (>= 4.2, < 5.1)
       addressable (~> 2.3)
       backports (~> 3.6)
       bundler (~> 1.1)
@@ -81,10 +80,10 @@ GEM
       memoist (~> 0.14)
       padrino-helpers (~> 0.13.0)
       parallel
-      rack (>= 1.4.5, < 2.0)
+      rack (>= 1.4.5, < 3)
       sass (>= 3.4)
       servolux
-      tilt (~> 1.4.1)
+      tilt (~> 2.0)
       uglifier (~> 3.0)
     middleman-gh-pages (0.0.3)
       rake (> 0.9.3)
@@ -98,34 +97,36 @@ GEM
     middleman-syntax (3.0.0)
       middleman-core (>= 3.2)
       rouge (~> 2.0)
-    minitest (5.9.0)
-    padrino-helpers (0.13.2)
+    minitest (5.10.2)
+    padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
-      padrino-support (= 0.13.2)
+      padrino-support (= 0.13.3.4)
       tilt (>= 1.4.1, < 3)
-    padrino-support (0.13.2)
+    padrino-support (0.13.3.4)
       activesupport (>= 3.1)
-    parallel (1.9.0)
+    parallel (1.11.2)
     pry (0.10.3)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (1.6.4)
+    public_suffix (2.0.5)
+    rack (2.0.3)
     rack-livereload (0.3.16)
       rack
     rake (10.4.2)
-    rb-fsevent (0.9.7)
-    rb-inotify (0.9.7)
-      ffi (>= 0.5.0)
+    rb-fsevent (0.9.8)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
     redcarpet (3.4.0)
     rouge (2.0.5)
-    sass (3.4.22)
-    servolux (0.12.0)
+    sass (3.4.24)
+    servolux (0.13.0)
     slop (3.6.0)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (1.4.1)
-    tzinfo (1.2.2)
+    temple (0.8.0)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    tilt (2.0.7)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
     uglifier (3.2.0)
       execjs (>= 0.3.0, < 3)