[A1] Rework assignment (#39)
[A1] Rework assignment (#39)

* [A1] Rework assignment

* [A1] Update writeup based on feedback

* [A1] Remind students to check the expected submission format

* [A1] Add instructions for online user testing

* [A1] Remove 'try to's

* [A1] Emphasise the demo video requirement

* [A1] Final touch ups

* [A1] Update suggestion as feedbacked

* [A1] Lint markdown file
cs3216/cs3216.github.io