official support revved to node v4+

README.md

@@ -27,6 +27,10 @@ Package details websites :
 
 This work is licenced via the [DBAD Public Licence](http://www.dbad-license.org/).
 
+#### Older versions of node
+
+the latest versions of `node-ipc` may work with the --harmony flag. Officially though, we support node v4 and newer with es5 and es6
+
 #### Testing
 
 ` npm test ` will run the jasmine tests with istanbul for node-ipc and generate a coverage report in the spec folder.

appveyor.yml

@@ -4,7 +4,6 @@
 environment:
   matrix:
   # node.js
-    - nodejs_version: "3"
     - nodejs_version: "4"
     - nodejs_version: "5"
     - nodejs_version: "6"

package.json

@@ -7,7 +7,7 @@
     "example": "example"
   },
   "engines": {
-    "node": ">=1.0.0"
+    "node": ">=4.0.0"
   },
   "dependencies": {
     "colors": "*",