Bump Nokogiri

Gemfile

@@ -30,7 +30,7 @@ end
 
 group :docs do
   gem 'typhoeus'
-  gem 'nokogiri', '~> 1.6.0'
+  gem 'nokogiri', '1.6.7.rc3'
   gem 'html-pipeline'
   gem 'progress_bar', require: false
   gem 'unix_utils', require: false

Gemfile.lock

@@ -32,11 +32,11 @@ GEM
     i18n (0.7.0)
     json (1.8.3)
     method_source (0.8.2)
-    mini_portile (0.6.2)
+    mini_portile (0.7.0.rc4)
     minitest (5.8.1)
     multi_json (1.11.2)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.6.7.rc3)
+      mini_portile (~> 0.7.0.rc4)
     options (2.3.2)
     progress_bar (1.0.5)
       highline (~> 1.6)
@@ -97,7 +97,7 @@ DEPENDENCIES
   erubis
   html-pipeline
   minitest
-  nokogiri (~> 1.6.0)
+  nokogiri (= 1.6.7.rc3)
   progress_bar
   pry (~> 0.10.0)
   rack