nodejs cartridge documentation can be found at:
Install the npm package of parse for node using the following command ."npm install parse-api" . I've used the following https://github.com/tenorviol/node-parse-api project for using parse with nodejs.
Make an account on parse and insert your APP_ID and MASTER_KEY in server.js file.
I've modified the server.js to insert new user in parse and to update his searches at parse.
I've also created a url to recieve the data which is saved at parse. But you've to make a call directly through the browser because we haven't discussed about it yet , what we've to do for that.
If anymore updates needed please contact me on trello. :)
Than you can view the data being saved in parse through parse dashboard.