Add a very simple working example

[Alexey Velikiy]

Hi,

As a new user of lib, I would see a dead-simple example app which sends hello world.

[Josh Bielick]

Hi @jonyrock . How do you feel about contributing this to the repo? It sounds like you have a good idea of what an example application might look like and what it should contain.

[Alexey Velikiy]

@jbielick I still wonna do it:)