Update Jest Reporter to output single line report

[kwelch]

The default jest reporter is "loud" and makes it possible to miss lint errors when using commands like start or build.

Jest currently only allows for the standard reporter. Once they allow for other reporters, Slingshot will need to be updated to utilize it.

[nickytonline]

Once https://github.com/facebook/jest/pull/3064 is merged, we can do this up.

[coryhouse]

Great to see it's on it's way! We'd benefit most from a single line reporter, so hopefully that's created soon.

[abdulhannanali]

@nickytonline Thanks for mentioning this! It's on it's way. Good to see it's going to be beneficial.

[nickytonline]

@kwelch, are we moving forward with this still?

[coryhouse]

Nice timing Nick - I'm working on this on a work project, so I can port the change over here when I'm done. :)

[nickytonline]

Cool beans. 💯