update dependency

Gemfile.lock

@@ -3,6 +3,7 @@ GEM
   specs:
     RedCloth (4.2.9)
     RedCloth (4.2.9-x86-mingw32)
+    blankslate (2.1.2.4)
     classifier (1.3.3)
       fast-stemmer (>= 1.0.0)
     colorator (0.1)
@@ -11,46 +12,49 @@ GEM
     fast-stemmer (1.0.2)
     ffi (1.9.3)
     ffi (1.9.3-x86-mingw32)
-    github-pages (9)
+    github-pages (12)
       RedCloth (= 4.2.9)
-      jekyll (= 1.3.0)
+      jekyll (= 1.4.2)
       kramdown (= 1.2.0)
-      liquid (= 2.5.3)
-      maruku (= 0.6.1)
+      liquid (= 2.5.4)
+      maruku (= 0.7.0)
       rdiscount (= 2.1.7)
       redcarpet (= 2.3.0)
     highline (1.6.20)
-    jekyll (1.3.0)
+    jekyll (1.4.2)
       classifier (~> 1.3)
       colorator (~> 0.1)
       commander (~> 4.1.3)
       liquid (~> 2.5.2)
       listen (~> 1.3)
-      maruku (~> 0.6.0)
+      maruku (~> 0.7.0)
       pygments.rb (~> 0.5.0)
       redcarpet (~> 2.3.0)
       safe_yaml (~> 0.9.7)
+      toml (~> 0.1.0)
     kramdown (1.2.0)
-    liquid (2.5.3)
+    liquid (2.5.4)
     listen (1.3.1)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
       rb-kqueue (>= 0.2)
-    maruku (0.6.1)
-      syntax (>= 1.0.0)
-    posix-spawn (0.3.6)
+    maruku (0.7.0)
+    parslet (1.5.0)
+      blankslate (~> 2.0)
+    posix-spawn (0.3.8)
     pygments.rb (0.5.4)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
     rb-fsevent (0.9.3)
-    rb-inotify (0.9.2)
+    rb-inotify (0.9.3)
       ffi (>= 0.5.0)
     rb-kqueue (0.2.0)
       ffi (>= 0.5.0)
     rdiscount (2.1.7)
     redcarpet (2.3.0)
     safe_yaml (0.9.7)
-    syntax (1.0.0)
+    toml (0.1.0)
+      parslet (~> 1.5.0)
     yajl-ruby (1.1.0)
     yajl-ruby (1.1.0-x86-mingw32)