Bump to node >=5.11 and update deps

package.json

@@ -1,7 +1,7 @@
 {
   "name": "straw",
   "description": "Realtime processing framework",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "homepage": "https://github.com/simonswain/straw",
   "author": {
     "name": "Simon Swain",
@@ -22,21 +22,21 @@
   ],
   "main": "lib/straw",
   "engines": {
-    "node": ">= 0.10.0"
+    "node": ">= 5.11.0"
   },
   "scripts": {
     "test": "grunt test"
   },
   "dependencies": {
-    "async": "^0.9.0",
-    "redis": "^0.12.1",
-    "underscore": "^1.8.2",
-    "winston": "^0.9.0"
+    "async": "^2.0.1",
+    "lodash": "^4.13.1",
+    "redis": "^2.6.2",
+    "winston": "^2.2.0"
   },
   "devDependencies": {
-    "grunt": "^0.4.5",
-    "grunt-contrib-jshint": "^0.11.0",
-    "grunt-contrib-nodeunit": "^0.4.1",
+    "grunt": "^1.0.1",
+    "grunt-contrib-jshint": "^1.0.0",
+    "grunt-contrib-nodeunit": "^1.0.0",
     "nodeunit": "^0.9.1"
   },
   "keywords": [