restrict to node 0.12.0 and higher for native promises

package.json

@@ -1,12 +1,12 @@
 {
-  "name": "hapi-intercom",
-  "version": "1.0.0",
-  "description": "A hapi module that enables horizontal eventdriven communication between modules",
-  "main": "src/plugin.js",
-  "scripts": {
-    "test": "gulp"
-  },
-  "keywords": [
+    "name": "hapi-intercom",
+    "version": "1.0.0",
+    "description": "A hapi module that enables horizontal eventdriven communication between modules",
+    "main": "src/plugin.js",
+    "scripts": {
+        "test": "gulp"
+    },
+    "keywords": [
     "radio",
     "eventbus",
     "hapi",
@@ -18,22 +18,25 @@
     "request",
     "reply"
   ],
-  "author": "atroo GbR <[email protected]>",
-  "license": "ISC",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/atroo/hapi-intercom"
-  },
-  "dependencies": {
-    "underscore": "^1.8.2"
-  },
-  "devDependencies": {
-    "boom": "^2.6.1",
-    "chai": "^2.1.2",
-    "gulp": "^3.8.11",
-    "gulp-mocha": "^2.0.0",
-    "gulp-plumber": "^1.0.0",
-    "gulp-util": "^3.0.4",
-    "hapi": "^8.4.0"
-  }
-}
+    "author": "atroo GbR <[email protected]>",
+    "license": "ISC",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/atroo/hapi-intercom"
+    },
+    "engines": {
+        "node" : ">=0.12.0"
+    },
+    "dependencies": {
+        "underscore": "^1.8.2"
+    },
+    "devDependencies": {
+        "boom": "^2.6.1",
+        "chai": "^2.1.2",
+        "gulp": "^3.8.11",
+        "gulp-mocha": "^2.0.0",
+        "gulp-plumber": "^1.0.0",
+        "gulp-util": "^3.0.4",
+        "hapi": "^8.4.0"
+    }
+}