Add more information to the readme

[fellnerse]

Cool project, I was able to run this myself.
Maybe you want to add more information to the readme. I had to find the information for uploading the filesystem myself and struggled with it quite a while...also it would be great to change this line (https://github.com/VK/NodeVue/blob/master/vue/deployNodeMCU.js#L38) to work on all Systems. I'm using a mac and therefore this did not work. The generated file was pointing still to .../data.