Create strings.xml for South Korea

[naXa777]

No description provided.

[naXa777]

The Travis CI build failed due to unavailable environment variables. It is safe to merge this PR.

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#Pull-Requests-and-Security-Restrictions

[onestone9900]

The Travis CI build failed due to unavailable environment variables. It is safe to merge this PR.

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#Pull-Requests-and-Security-Restrictions

I read "link URL" and "Travis CI get in start doc" for several days.
I don't know exactly understand problem
In that case, It's not create my Code but miss match upstream Repository because I am external contributor, isn't it?

I study concept of CI. so cool!
Let me know misunderstand or what I should do about this problem~
Have a good day! :)

[naXa777]

@sowen2819 No, there's no action required from you. Sorry for the confusion!

It's just a specific of my project configuration. This Android application requires Crashlytics secret key in order to build properly and I have this key configured in Travis CI environment variable. But for security reasons, some environment variables are hidden (not available) when building pull requests. Therefore the build errored.

It was a surprise for me :) And I will investigate this problem later.