Improve warnings about atom-ide-scala

[sammynammari]

I've noticed that if set the default language server to Metals and have "Choose server based on the project setup" unchecked, I get the yellow "Project is not setup, using default language server: Metals" message. But, Metals starts up and runs just fine.

Also, me and my coworkers are really excited about this and Metals. Thanks for the hard work :)

[laughedelic]

Yep, this is expected behaviour, but it's confusing, indeed. That's why I opened this issue. I didn't test enough various usage scenarios before I released 0.6.0. But I'll improve it this week.

Still though, this warning is valid at the moment: it was meant to make you aware that you need to setup the project to use Metals in it. This process will get simplified a lot in Metals for the sbt 1.x users: scalameta/metals#287, but at the moment you should follow Metals installation instructions to prepare your projects. Without it server will start, but most features just won't work.

Also, me and my coworkers are really excited about this and Metals. Thanks for the hard work :)

Cool! I'm glad to hear it!