fixed the rouge gem to fixed an issue with the language tabs

Gemfile

@@ -2,6 +2,8 @@
 # the following line to use "https"
 source 'http://rubygems.org'
 
+gem "rouge", "1.7.2"
+
 gem "middleman", "~>3.3.0"
 
 # For syntax highlighting

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (4.1.8)
+    activesupport (4.1.9)
       i18n (~> 0.6, >= 0.6.9)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -30,7 +30,7 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     erubis (2.7.0)
-    eventmachine (1.0.3)
+    eventmachine (1.0.4)
     execjs (2.2.2)
     ffi (1.9.6)
     haml (4.0.6)
@@ -41,10 +41,10 @@ GEM
       uber (~> 0.0.4)
     http_parser.rb (0.6.0)
     i18n (0.6.11)
-    json (1.8.1)
+    json (1.8.2)
     kramdown (1.5.0)
     libv8 (3.16.14.7)
-    listen (2.8.3)
+    listen (2.8.5)
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
@@ -77,34 +77,34 @@ GEM
       em-websocket (~> 0.5.1)
       middleman-core (~> 3.2)
       rack-livereload (~> 0.3.15)
-    middleman-sprockets (3.3.10)
-      middleman-core (~> 3.3)
+    middleman-sprockets (3.4.1)
+      middleman-core (>= 3.3)
       sprockets (~> 2.12.1)
       sprockets-helpers (~> 1.1.0)
-      sprockets-sass (~> 1.2.0)
+      sprockets-sass (~> 1.3.0)
     middleman-syntax (2.0.0)
       middleman-core (~> 3.2)
       rouge (~> 1.0)
-    minitest (5.4.3)
+    minitest (5.5.1)
     multi_json (1.10.1)
     padrino-helpers (0.12.4)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.12.4)
       tilt (~> 1.4.1)
     padrino-support (0.12.4)
       activesupport (>= 3.1)
-    rack (1.5.2)
+    rack (1.6.0)
     rack-livereload (0.3.15)
       rack
-    rack-test (0.6.2)
+    rack-test (0.6.3)
       rack (>= 1.0)
     rake (10.4.2)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
-    redcarpet (3.2.1)
+    redcarpet (3.2.2)
     ref (1.0.5)
-    rouge (1.7.4)
+    rouge (1.7.2)
     ruby18_source_location (0.2)
     sass (3.4.9)
     sprockets (2.12.3)
@@ -114,7 +114,7 @@ GEM
       tilt (~> 1.1, != 1.3.0)
     sprockets-helpers (1.1.0)
       sprockets (~> 2.0)
-    sprockets-sass (1.2.0)
+    sprockets-sass (1.3.1)
       sprockets (~> 2.0)
       tilt (~> 1.1)
     therubyracer (0.12.1)
@@ -127,8 +127,8 @@ GEM
       hitimes
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uber (0.0.11)
-    uglifier (2.5.3)
+    uber (0.0.13)
+    uglifier (2.7.0)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
 
@@ -142,6 +142,7 @@ DEPENDENCIES
   middleman-syntax
   rake (~> 10.4.0)
   redcarpet (~> 3.2.1)
+  rouge (= 1.7.2)
   ruby18_source_location
   therubyracer
   wdm (~> 0.1.0)