otter assign - `AssertionError: Requirements file requirements.txt not found"

[cdbeon]

Describe the bug
After updating otter-grader to v. 2.0.1, I attempted to create an assignment using otter assign. Unfortunately, while generating the autograder zipfile, otter-grader didn't recognize 'requirements.txt' and shows the AssertionError as listed in the title. The dist file was created, but without the autograder.zip as a result.

To Reproduce
This issue also persists when following the instructions for the hw01-assign.Rmd in the ottr-sample github.

Simply typing otter assign hw01-assign.Rmd dist (or any other Rmd file, for that matter) reproduces the error on my end.

Expected behavior
The autograder.zip file being generated in the autograder directory.

Versions
Python v.3.8.6
Otter v.2.0.1

Additional context
Currently attempting to generate the autograder.zip file for Gradescope. This is for an assignment in R, specifically on an Rmarkdown file. Not sure if there was something else I should update in addition to otter-grader in the terminal using pip. Thanks for helping out!

[chrispyles]

Opened #186 that fixes this issue and released v2.0.2