diff --git a/Gemfile.lock b/Gemfile.lock
index 4fda2ea..95799ff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,43 +9,42 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    actionmailer (4.2.2)
-      actionpack (= 4.2.2)
-      actionview (= 4.2.2)
-      activejob (= 4.2.2)
+    actionmailer (4.2.11.1)
+      actionpack (= 4.2.11.1)
+      actionview (= 4.2.11.1)
+      activejob (= 4.2.11.1)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.2)
-      actionview (= 4.2.2)
-      activesupport (= 4.2.2)
+    actionpack (4.2.11.1)
+      actionview (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    actionview (4.2.2)
-      activesupport (= 4.2.2)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.11.1)
+      activesupport (= 4.2.11.1)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    activejob (4.2.2)
-      activesupport (= 4.2.2)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (4.2.11.1)
+      activesupport (= 4.2.11.1)
       globalid (>= 0.3.0)
-    activemodel (4.2.2)
-      activesupport (= 4.2.2)
+    activemodel (4.2.11.1)
+      activesupport (= 4.2.11.1)
       builder (~> 3.1)
-    activerecord (4.2.2)
-      activemodel (= 4.2.2)
-      activesupport (= 4.2.2)
+    activerecord (4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       arel (~> 6.0)
-    activesupport (4.2.2)
+    activesupport (4.2.11.1)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.3.8)
-    arel (6.0.0)
+    arel (6.0.4)
     ast (2.0.0)
     astrolabe (1.3.1)
       parser (~> 2.2)
@@ -56,8 +55,8 @@ GEM
       addressable
     diff-lcs (1.2.5)
     erubis (2.7.0)
-    globalid (0.3.5)
-      activesupport (>= 4.1.0)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
     htmlentities (4.3.3)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
@@ -65,13 +64,12 @@ GEM
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.6)
     loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
-    mime-types (2.6.1)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     nokogiri (1.10.4)
@@ -88,16 +86,16 @@ GEM
     rack (1.6.11)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.2)
-      actionmailer (= 4.2.2)
-      actionpack (= 4.2.2)
-      actionview (= 4.2.2)
-      activejob (= 4.2.2)
-      activemodel (= 4.2.2)
-      activerecord (= 4.2.2)
-      activesupport (= 4.2.2)
+    rails (4.2.11.1)
+      actionmailer (= 4.2.11.1)
+      actionpack (= 4.2.11.1)
+      actionview (= 4.2.11.1)
+      activejob (= 4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activerecord (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.2)
+      railties (= 4.2.11.1)
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
@@ -107,13 +105,13 @@ GEM
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.2.0)
       loofah (~> 2.2, >= 2.2.2)
-    railties (4.2.2)
-      actionpack (= 4.2.2)
-      activesupport (= 4.2.2)
+    railties (4.2.11.1)
+      actionpack (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.0.0)
-    rake (10.4.2)
+    rake (12.3.3)
     rspec-core (3.3.1)
       rspec-support (~> 3.3.0)
     rspec-expectations (3.3.0)
@@ -141,12 +139,12 @@ GEM
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (2.3.2)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      sprockets (>= 2.8, < 4.0)
+    sprockets-rails (3.2.1)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
     sqlite3 (1.3.10)
-    thor (0.19.1)
+    thor (0.20.3)
     thread_safe (0.3.6)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)