Heo KyuYoung

Type of issue - Doc Description - I think opensource project should have code of conduct. 😄 How about add CODE_OF_CONDUCT.md to mgcpp? If this looks good on you, could...

Make wiki pages to describe project Wiki pages would contain - Directory structure - API docs

Add installation and usage in README for prefeel-lib's user and contributors.

I think project should have contribution license agreement let contributors know we ensure that the community is free to use their contributions and let project easily pursue legal resolution.