update README for Node.js 4.2.0 (fix #5)

Author: beevelop

README.md

@@ -1,7 +1,7 @@
 [![](https://badge.imagelayers.io/beevelop/android-nodejs:latest.svg)](https://imagelayers.io/?images=beevelop/android-nodejs:latest 'Get your own badge on imagelayers.io')
 
 # Android with Node.js based on [beevelop/android](https://github.com/beevelop/docker-android)
-- Node.js 4.1.2
+- Node.js 4.2.0
 - npm 2.14.3
 
 ## Disclaimer