Bump package version and node version

package.json

 {
   "name": "IRC-Gateway",
-  "version": "1.0.0",
+  "version": "1.2.0",
   "description": "The IRC Gateway server and client for the game SG-Realities",
   "keywords": [
     "SGR",
@@ -19,8 +19,8 @@
     "url": "https://git.assembla.com/irc-gateway.git"
   },
   "engines": {
-    "node": ">= 0.10.0",
-    "npm": ">= 1.0.0"
+    "node": ">= 4.4.0",
+    "npm": ">= 2.10.0"
   },
   "scripts": {
     "preinstall": "npm install coffee-script@1.10.0 -g",