Release v0.4.0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "Settlement",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "A web survival game.",
   "author": "Guillaume Martigny <guillaume.martigny@gmail.com> (https://www.guillaume-martigny.fr)",
   "homepage": "https://gmartigny.github.io/settlement",
@@ -14,11 +14,13 @@
     "es6-shim": "^0.35.3",
     "es7-shim": "^6.0.0",
     "grunt": "^1.0.1",
+    "grunt-bump": "^0.8.0",
     "grunt-contrib-jasmine": "^1.1.0",
     "grunt-contrib-less": "^1.4.0",
     "grunt-contrib-uglify": "^3.0.1",
     "grunt-contrib-watch": "^1.0.0",
     "grunt-eslint": "^20.0.0",
+    "grunt-gh-pages": "^2.0.0",
     "grunt-lesslint": "^4.0.0",
     "grunt-spritesmith": "^6.3.1",
     "grunt-template-jasmine-istanbul": "^0.5.0",