Feedback on week 6 project progress for nelsontky

Leftovers from the previous week

[x] A version tagged Level-10 is in the repo(:heavy_check_mark: well done!)
[x] A version tagged A-Assertions is in the repo(:heavy_check_mark: well done!)
[x] A version tagged A-CodeQuality is in the repo(:heavy_check_mark: well done!)
[x] A version tagged C-BetterSearch is in the repo(:heavy_check_mark: well done!)
You are done with previous weeks work(:heavy_check_mark: well done!)

[x] docs/REAME.md is updated(:exclamation: try to do by next milestone)
[x] docs/Ui.png (the name is case-sensitive and filename should be an exact match) has been added(:heavy_check_mark: well done!)
[x] a jar file has been released in the past week(:heavy_check_mark: well done!)
[x] product website available at http://nelsontky.github.io/duke (:heavy_check_mark: well done!)

_{Note: the above observation was done by the CS2103-feedback-bot and covers changes up to 2020-02-21 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.}