Do I need to get the license to use the flags for my company app UI?

[MGjyoon]

Do I need to get the license to use the flags for my company app UI? How can I guide my app developer to include the copyright in their coding?

[HatScripts]

This project is released under the MIT License.
Read more here: https://github.com/HatScripts/circle-flags/blob/gh-pages/LICENSE.md