Added comment about presentation length

assignments/project.md

@@ -66,7 +66,7 @@ There will also be a midpoint checkin individually with Jen & Kelly; Details TBD
 
 # Final project deliverables
 Your final set of deliverables are due March 14: 
- - a slide deck presenting your work (you will present this in the class final exam slot)
+ - a slide deck presenting your work (you will present this in the class final exam slot). Presentation length TBD depending on the number of groups.
  - a public-facing web page containing a write-up of your project on a platform we will announce (e.g. [instructables](https://www.instructables.com/))
 
 ## Slides