Bump nokogiri

Gemfile

@@ -131,7 +131,7 @@ gem "leaflet-rails",       "0.7.7"
 
 # Parsing
 
-gem "nokogiri",          "1.6.8"
+gem "nokogiri",          "1.6.8.1"
 gem "redcarpet",         "3.3.4"
 gem "twitter-text",      "1.14.0"
 gem "ruby-oembed",       "0.10.1"

Gemfile.lock

@@ -522,9 +522,8 @@ GEM
     nenv (0.3.0)
     nested_form (0.3.2)
     nio4r (1.2.1)
-    nokogiri (1.6.8)
+    nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -575,7 +574,6 @@ GEM
       ast (~> 2.2)
     pg (0.18.4)
     phantomjs (2.1.1.0)
-    pkg-config (1.1.7)
     poltergeist (1.10.0)
       capybara (~> 2.1)
       cliver (~> 0.3.1)
@@ -975,7 +973,7 @@ DEPENDENCIES
   minitest
   mobile-fu (= 1.3.1)
   mysql2 (= 0.4.4)
-  nokogiri (= 1.6.8)
+  nokogiri (= 1.6.8.1)
   omniauth (= 1.3.1)
   omniauth-facebook (= 4.0.0)
   omniauth-tumblr (= 1.2)