The installation problems are strange – I can’t reproduce them.
A small issue I ran into is that it seems there’s no way to close the doc that show in your code (Ctrl+j Ctrl-d). It would maybe be better to show it in the doc pane.
You can use Esc to hide the inline docs. And to be honest I rather like having both inline documentation and the doc pane – feel free to open an issue at the Juno.jl repo if you want to discuss though 
If you want to help debug this, please re-enable julia-client and ink, restart Atom, and open the dev console with Cmd-Shift-I (or got to View > Developer > Toggle Developer Tools). There will most likely be some error messages there; open a new issue and paste them there.