Web IDE as an app! (node-webkit / nw.js)

I'm not really sure about the paths - I'm not a big node.js user,

but... serialport should definitely be an npm package - but actually it can be that you get a complaint not because it's not installed, but because the binary version doesn't match the version of nw.js. That extra commented code in the .sh file - it could be that the version of nw.js it's compiling for isn't the version that you have installed?