Translations of README.

[Hsins]

Translate the README

People use CJK characters from Taiwan, China, Japan, and Korea. It would be helpful to translate the README file into languages used by them. Provide the locale codes of those languages:

• ja
• ko
• zh-cn
• zh-tw

Steps to complete the translation

1. Fork this repository.
2. Copy the README file to the translations folder from the root folder and rename it as the format README.{CODE}.md. e.g. README.zh-tw.md
3. Create the Pull Request.