builder = new AppiumServiceBuilder ();|
builder.withIPAddress (0.0.0.0)|
.usingPort (4723)|
.withAppiumJS (|
new File (*<path found as per your post, for appium sym_link to a index.js file>*))|
.usingDriverExecutable (new File (<path found on terminal for 'which node'>))|
.withArgument (GeneralServerFlag.BASEPATH, "/")|
.withArgument (GeneralServerFlag.SESSION_OVERRIDE)|
.withArgument (GeneralServerFlag.LOG_LEVEL, error);|
using which, I could start my appium 2.x server installed using nvm at