Pkgs: Add redux pkg.

Author: Kwangsoo Shin

package.json

@@ -22,6 +22,7 @@
     "jade": "~1.11.0",
     "jquery": "^1.12.4",
     "morgan": "~1.7.0",
+    "redux": "^3.6.0",
     "serve-favicon": "~2.3.2",
     "webpack": "^2.2.1"
   },