Question: Sublime Text has this same functionality via:

`ctrl+shift+m` or `cmd+shift+space`

How do I accomplish the same thing in Atom?

Answer: 
Select all text between quotes, parentheses etc in Atom.io:  

 Ctrl+Alt+,
Atom does not natively support this functionality that I have found.
The closest thing I have seen is this package: <https://atom.io/packages/select-scope>