Update dependencies.

package.json

@@ -43,7 +43,7 @@
     "grunt-contrib-csslint": "~0.2.0",
     "grunt-contrib-cssmin": "~0.9.0",
     "grunt-contrib-jade": "~0.11.0",
-    "grunt-contrib-jshint": "~0.9.2",
+    "grunt-contrib-jshint": "~0.10.0",
     "grunt-contrib-less": "~0.11.0",
     "grunt-contrib-qunit": "~0.4.0",
     "grunt-contrib-uglify": "~0.4.0",
@@ -51,7 +51,7 @@
     "grunt-csscomb": "~2.0.1",
     "grunt-css-flip": "~0.2.1",
     "grunt-exec": "~0.4.5",
-    "grunt-html-validation": "~0.1.14",
+    "grunt-html-validation": "~0.1.15",
     "grunt-jekyll": "~0.4.1",
     "grunt-jscs-checker": "~0.4.1",
     "grunt-saucelabs": "~5.1.1",