Lint command doesn't work with nested folders

[MikeSuiter]

I'm using the same lint command and found it out doesn't work on nested folders on macOS. For example src/components/Component.js gets linted but src/components/field/Component.js doesn't. After a lot of pain tracking down I changed this:

"lint": "eslint ./src/**/*.js --max-warnings=0 --format=codeframe"

to this:

"lint": "eslint \"./src/**/*.js\" --max-warnings=0 --format=codeframe"

I tested on both macOS and Windows and both seem happy.

[F1LT3R]

Thanks @MikeSuiter ! Can you submit PR?