Update dependencies

package.json

@@ -48,6 +48,10 @@
     "grunt-clear": "~0.2.1",
     "grunt-autoprefixer": "~0.4.0",
     "grunt-karma-coveralls": "~2.2.0",
-    "karma-coverage": "~0.1.4"
+    "karma-coverage": "~0.1.4",
+    "docpad-plugin-partials": "~2.8.1",
+    "docpad-plugin-ghpages": "~2.4.2",
+    "docpad-plugin-eco": "~2.0.3",
+    "docpad": "~6.59.6"
   }
 }