Upgraded versions

package.json

@@ -46,12 +46,12 @@
         "grunt": "~0.4.2",
         "grunt-bower-task": "~0.4.0",
         "grunt-cli": "~0.1.11",
-        "grunt-concurrent": "0.4.3",
-        "grunt-contrib-jshint": "0.9.2",
-        "grunt-contrib-watch": "0.6.0",
+        "grunt-concurrent": "^1.0.0",
+        "grunt-contrib-jshint": "^0.11.0",
+        "grunt-contrib-watch": "^0.6.0",
         "grunt-dev-update": "^1.0.2",
-        "grunt-jsbeautifier": "~0.2.6",
-        "grunt-nodemon": "0.2.0",
+        "grunt-jsbeautifier": "^0.2.6",
+        "grunt-nodemon": "^0.4.0",
         "grunt-shell": "^1.1.1",
         "load-grunt-tasks": "^3.1.0"
     }