[WIP] Add korean translations

[minwook-shin]

WIP
I interested in this project, so I started translating Korean.

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[ghost]

All CLA requirements met.

[jlooper]

very cool! thank you!

[minwook-shin]

note : merged #38

[Hiearl77]

Good 😊

[minwook-shin]

hello, @jlooper.
All done. converted to pull request. please merging this.

[jlooper]

this is just amazing, Minwook-shin, thank you so much!

[jlooper]

beautiful!