bring the node dependance in line with request

tested against 0.4.7

and version bump

fixes #1

package.json

@@ -1,11 +1,11 @@
 {
   "name": "ironmq",
   "description": "ironMQ bindings for node",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "author": "ryan emery <seebees@gmail.com>",
   "main": "./libs/index.js",
   "engines": {
-    "node": "0.6.x"
+    "node": ">= 0.3.6"
   },
   "scripts" : {
     "test" : "tap tests/test*.js"