Update dependencies

Author: sciurus

Gemfile

@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
 gem 'rake'
-gem 'html-proofer'
+gem 'html-proofer', '~>2'

Gemfile.lock

@@ -1,32 +1,50 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.7)
+    activesupport (4.2.10)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     colored (1.2)
-    ethon (0.7.3)
+    concurrent-ruby (1.0.5)
+    ethon (0.11.0)
       ffi (>= 1.3.0)
-    ffi (1.9.8)
-    html-proofer (2.1.0)
+    ffi (1.9.18)
+    html-proofer (2.6.4)
+      activesupport (~> 4.2)
       addressable (~> 2.3)
       colored (~> 1.2)
       mercenary (~> 0.3.2)
       nokogiri (~> 1.5)
       parallel (~> 1.3)
       typhoeus (~> 0.7)
       yell (~> 2.0)
-    mercenary (0.3.5)
-    mini_portile (0.6.2)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    parallel (1.4.1)
-    rake (10.4.2)
-    typhoeus (0.7.1)
-      ethon (>= 0.7.1)
-    yell (2.0.5)
+    i18n (0.9.1)
+      concurrent-ruby (~> 1.0)
+    mercenary (0.3.6)
+    mini_portile2 (2.3.0)
+    minitest (5.11.1)
+    nokogiri (1.8.1)
+      mini_portile2 (~> 2.3.0)
+    parallel (1.12.1)
+    public_suffix (3.0.1)
+    rake (12.3.0)
+    thread_safe (0.3.6)
+    typhoeus (0.8.0)
+      ethon (>= 0.8.0)
+    tzinfo (1.2.4)
+      thread_safe (~> 0.1)
+    yell (2.0.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  html-proofer
+  html-proofer (~> 2)
   rake
+
+BUNDLED WITH
+   1.13.6