[Proposal] New functions example

[jota-ele-ene]

[Proposal]
I developed a new functions example. You can find it at this repo: https://github.com/jota-ele-ene/wrap-api

I think all the required info to publish it as an example is in the README

I developed to act as a proxy that adds a parameter retrieved from the environmental variables (e.g. the API SECRET KEYS) to the query parameters URL and fetchs the actual server.