Updating mirinae opensource license

[minseolee]

Description
Explain what documentation changes are needed.

Hello.

I want to use this nice assets of mirinae for my project.
This mirinae project is looked like released as by Apache 4.0.
But it seems the document of license has been consist of default template only.

Would you update it please?
Always thanks for your contribution.

With gratitude, Minseo Lee