Make more intuitive error message if the CellRanger Directory is not correct #22
Description
Right now, if someone specifies the wrong cellranger directory, it gives me an error with 'list index out of range'.
cellranger_dir = Path("some_wrong_path")
Can you add a piece of code that actually specifies a more intuitive error? Something like - 'InputError: CellRanger Directory does not contain barcodes, features or matrix.tsv file'.