Update README.md

README.md

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 # VLTE_PIPELINES
 Pipelines for fitness assay, sequencing, etc. analysis of the VLTE ("very" long term evolution experiment (yeast))
 
-Basic analysis structure: Data is kept in a directory of the parent directory of this repo (see scripts for paths). 
+Basic analysis structure: 
+Scripts are run from the directories here. A "Data" directory is kept in the parent directory of this repo, and has these subdirectories:
+Fitness, Imaging, KV, Other, Ploidy, TSA1_Fluctuation_Assay, WGS (see scripts for full paths to individual data files).
+
+### Other info
 WGS data is at https://trace.ncbi.nlm.nih.gov/Traces/sra/?study=SRP286889 
 and other data is available as supplementary files of https://www.biorxiv.org/content/10.1101/2020.10.09.330191v1
 (you can also look up the title on eLife, where it will be published soon, to find the final version).