I am not 100% sure what you will be running on that device, but on the specs it says it supports different OS. If you are planning to do something platform independent but with support for a modern browser, you could try reading this link which has a nice explanation of the current draft of the orientation API on HTML5 http://www.html5rocks.com/en/tutorials/device/orientation/.
If you are developing a native application, I am sure that any platform with networking capabilities will have support for a socket connection; in this case, then you could write a small native app that reads the accelerometer input and publishes it to your Node.js app using sockets to read this inputs and then build on top of it a web app that will let you monitor such values.