Feedback on week 7 project progress for nicholascf

[nus-se-bot]

Leftovers from the previous week

• docs/Ui.png has been added (:heavy_check_mark: well done!)

• product website available at http://nicholascf.github.io/duke (:heavy_check_mark: well done!)

_{Note: the above observation was done by the CS2103-feedback-bot and covers changes up to 2020-02-26 00:00:00 only. If you think the above observation is incorrect, please let us know by replying in this thread. Please include links to relevant PRs/comments in your response.}