Update dependencies.

package.json

@@ -29,7 +29,7 @@
     "grunt": "~0.4.5",
     "grunt-contrib-clean": "~0.6.0",
     "grunt-contrib-concat": "~0.5.0",
-    "grunt-contrib-copy": "~0.6.0",
+    "grunt-contrib-copy": "~0.7.0",
     "grunt-contrib-csslint": "~0.3.1",
     "grunt-contrib-cssmin": "~0.10.0",
     "grunt-contrib-jshint": "~0.10.0",
@@ -39,7 +39,7 @@
     "grunt-csscomb": "~3.0.0",
     "grunt-html-validation": "~0.1.18",
     "grunt-jekyll": "~0.4.2",
-    "grunt-jscs": "~0.7.1",
+    "grunt-jscs": "~0.8.0",
     "grunt-sed": "~0.1.1",
     "load-grunt-tasks": "~0.6.0",
     "time-grunt": "~1.0.0"