Documentation and file type for SampleSheet.csv

[mschubert]

Description of feature

This is related to #81, which states (but is not the main concern of the linked issue)

Also https://raw.githubusercontent.com/nf-core/test-datasets/demultiplex/testdata/MiSeq/SampleSheet.csv doesn't seem like proper csv to me.

Would it be possible to add some documentation on how to write such a SampleSheet.csv file, and (probably) fix the extension to TOML?

I tried to look for it on https://nf-co.re/demultiplex/1.1.0/usage, but there was no mention of this.

[edmundmiller]

Is it a TOML though?

[mschubert]

Well, also not really. Hence the probably and the question mark.

But the more important part is that reading the usage documentation, I've got no idea how to write such a file. To get some more info there would be great!

Btw, great that you're maintaining this pipeline! 👍 I'd love to use it.

[edmundmiller]

It's an Illumina "Samplesheet" https://support-docs.illumina.com/SW/BCL_Convert/Content/SW/BCLConvert/SampleSheets_swBCL.htm

So I think linking to those docs would solve this.