Feedback on week 6 project progress for q-gabe

Leftovers from the previous week

[x] A version tagged A-Jar is in the repo(:exclamation: try to do by next milestone)
[x] You have no tag from categories B/C/D(:exclamation: try to do by next milestone)
[x] At least 2 PRs are in your fork(:exclamation: try to do by next milestone)

[x] docs/REAME.md is updated(:exclamation: try to do by next milestone)
[x] docs/UI.png has been added(:exclamation: try to do by next milestone)
[x] a jar file has been released in the past week(:exclamation: try to do by next milestone)
[x] product website available at http://q-gabe.github.io/duke (:exclamation: try to do by next milestone)

_{Note: the above observation was done by the CS2103-feedback-bot and covers changes up to 2019-09-20 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.}