The API isn’t especially well-documented (I’m sure it’s all there for people who already know their way around ALS, but it’s not presented in a way that gives an easy entrypoint for people with no familiarity with the package), so I’m left unsure about what exactly the service requires for it to be integrated with a new editor. If you can find me that information (sample code would be great), I can tell you what you need to do to make it work with Atom.
Related question on StackOverflow: “How do I use angular language service?”
I’m not interested in wading through and dissecting a talk. Written information is best. The question you linked to has no answer.