diff --git a/Gemfile.lock b/Gemfile.lock
index 29201e8..7c02875 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,19 +1,19 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (4.1.10)
-      i18n (~> 0.6, >= 0.6.9)
-      json (~> 1.7, >= 1.7.7)
+    activesupport (5.0.2)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (~> 0.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
       tzinfo (~> 1.1)
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
-    chunky_png (1.3.4)
+    addressable (2.5.0)
+      public_suffix (~> 2.0, >= 2.0.2)
+    backports (3.6.8)
+    chunky_png (1.3.8)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.9.1)
+    coffee-script-source (1.12.2)
     compass (1.0.3)
       chunky_png (~> 1.2)
       compass-core (~> 1.0.2)
@@ -26,104 +26,99 @@ GEM
       sass (>= 3.3.0, < 3.5)
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
+    concurrent-ruby (1.0.5)
+    contracts (0.13.0)
+    dotenv (2.2.0)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     erubis (2.7.0)
-    eventmachine (1.0.7)
-    execjs (2.5.2)
-    ffi (1.9.8)
-    haml (4.0.6)
+    eventmachine (1.2.3)
+    execjs (2.7.0)
+    fast_blank (1.0.0)
+    fastimage (2.1.0)
+    ffi (1.9.17)
+    haml (4.0.7)
       tilt
-    hike (1.2.3)
-    hitimes (1.2.2)
-    hooks (0.4.0)
-      uber (~> 0.0.4)
+    hamster (3.0.0)
+      concurrent-ruby (~> 1.0)
+    hashie (3.5.5)
     http_parser.rb (0.6.0)
     i18n (0.7.0)
-    json (1.8.2)
-    kramdown (1.6.0)
-    listen (2.10.0)
-      celluloid (~> 0.16.0)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
-    middleman (3.3.10)
+    kramdown (1.13.2)
+    listen (3.0.8)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    memoist (0.15.0)
+    middleman (4.2.1)
       coffee-script (~> 2.2)
-      compass (>= 1.0.0, < 2.0.0)
       compass-import-once (= 1.0.5)
-      execjs (~> 2.0)
       haml (>= 4.0.5)
       kramdown (~> 1.2)
-      middleman-core (= 3.3.10)
-      middleman-sprockets (>= 3.1.2)
+      middleman-cli (= 4.2.1)
+      middleman-core (= 4.2.1)
       sass (>= 3.4.0, < 4.0)
-      uglifier (~> 2.5)
-    middleman-core (3.3.10)
-      activesupport (~> 4.1.0)
+    middleman-cli (4.2.1)
+      thor (>= 0.17.0, < 2.0)
+    middleman-core (4.2.1)
+      activesupport (>= 4.2, < 5.1)
+      addressable (~> 2.3)
+      backports (~> 3.6)
       bundler (~> 1.1)
+      contracts (~> 0.13.0)
+      dotenv
       erubis
-      hooks (~> 0.3)
+      execjs (~> 2.0)
+      fast_blank
+      fastimage (~> 2.0)
+      hamster (~> 3.0)
+      hashie (~> 3.4)
       i18n (~> 0.7.0)
-      listen (>= 2.7.9, < 3.0)
-      padrino-helpers (~> 0.12.3)
-      rack (>= 1.4.5, < 2.0)
-      rack-test (~> 0.6.2)
-      thor (>= 0.15.2, < 2.0)
-      tilt (~> 1.4.1, < 2.0)
-    middleman-livereload (3.4.2)
+      listen (~> 3.0.0)
+      memoist (~> 0.14)
+      padrino-helpers (~> 0.13.0)
+      parallel
+      rack (>= 1.4.5, < 3)
+      sass (>= 3.4)
+      servolux
+      tilt (~> 2.0)
+      uglifier (~> 3.0)
+    middleman-livereload (3.4.6)
       em-websocket (~> 0.5.1)
       middleman-core (>= 3.3)
       rack-livereload (~> 0.3.15)
-    middleman-sprockets (3.4.2)
-      middleman-core (>= 3.3)
-      sprockets (~> 2.12.1)
-      sprockets-helpers (~> 1.1.0)
-      sprockets-sass (~> 1.3.0)
-    minitest (5.5.1)
-    multi_json (1.11.0)
-    oily_png (1.1.2)
-      chunky_png (~> 1.3.1)
-    padrino-helpers (0.12.5)
+    minitest (5.10.1)
+    multi_json (1.12.1)
+    oily_png (1.2.1)
+      chunky_png (~> 1.3.7)
+    padrino-helpers (0.13.3.3)
       i18n (~> 0.6, >= 0.6.7)
-      padrino-support (= 0.12.5)
-      tilt (~> 1.4.1)
-    padrino-support (0.12.5)
+      padrino-support (= 0.13.3.3)
+      tilt (>= 1.4.1, < 3)
+    padrino-support (0.13.3.3)
       activesupport (>= 3.1)
-    rack (1.6.0)
-    rack-livereload (0.3.15)
+    parallel (1.10.0)
+    public_suffix (2.0.5)
+    rack (2.0.1)
+    rack-livereload (0.3.16)
       rack
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rake (10.4.2)
-    rb-fsevent (0.9.4)
-    rb-inotify (0.9.5)
+    rake (12.0.0)
+    rb-fsevent (0.9.8)
+    rb-inotify (0.9.8)
       ffi (>= 0.5.0)
-    sass (3.4.13)
-    slim (3.0.3)
-      temple (~> 0.7.3)
+    sass (3.4.23)
+    servolux (0.12.0)
+    slim (3.0.7)
+      temple (~> 0.7.6)
       tilt (>= 1.3.3, < 2.1)
-    sprockets (2.12.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-helpers (1.1.0)
-      sprockets (~> 2.0)
-    sprockets-sass (1.3.1)
-      sprockets (~> 2.0)
-      tilt (~> 1.1)
-    temple (0.7.5)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (1.4.1)
-    timers (4.0.1)
-      hitimes
+    temple (0.7.7)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    tilt (2.0.6)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uber (0.0.13)
-    uglifier (2.7.1)
-      execjs (>= 0.3.0)
-      json (>= 1.8.0)
+    uglifier (3.1.3)
+      execjs (>= 0.3.0, < 3)
 
 PLATFORMS
   ruby
@@ -138,3 +133,6 @@ DEPENDENCIES
   rb-inotify
   sass
   slim
+
+BUNDLED WITH
+   1.14.4