Nice job. I don't know if you can be 'promise happy', that's part of the JS async, single threaded model! But nice job completing a project.

For testing, the tool used nowdays is [Jest](https://facebook.github.io/jest/)  mostly. It was built for React but you can use it with anything (we use it with Vue and jquery). There is a jquery example [here](https://facebook.github.io/jest/docs/en/tutorial-jquery.html).

Testing has a steep learning curve, but you are definitely on your way!

Getting a github pages up would be the best way to share. I actually have an article using steemjs in react, you could apply the same things to get your page working entirely on the client.