New Project: build frontend for node

[idleherb]

Prerequisite: solved issue #7

1. Create a new folder lix-demo-client-server
2. Copy the files from lix-demo-node
3. Create another index.html which uses "fetch()" to call your node POST route
   • https://davidwalsh.name/fetch
   • https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch 3.1 you can reuse the index.html from the first project if you want
4. Add CSS styles to make the app look more appealing

[idleherb]

@agareis