How to easily turn my web app into a chrome extension?

I would like users to be able to have my web app Kleermind visible everytime they open a new tab. It seems the only option is to create a Chrome extension so I was wondering if there is an easy way to do so.

I have build a chrome/firefox extension for a company once, The API is pretty straight forward and making your page work in a new tab (assuming you don't do interactions with other web pages) it's pretty easy!…

The google docs are pretty straight forward