Add README to SingleCell_cerevisiae

[Copilot]

The repo had only a two-line title as its README, leaving no guidance on what the project does, how to get the data, or how to run the analysis.

Changes

• Overview – describes the biological question (cell-cycle-aware transcriptional variability in yeast under rapamycin treatment)
• Data – links to GEO (GSE242556) and Zenodo source, documents the two required input files and their formats
• Repository structure – annotated file tree mapping each script to its role
• Pipeline walkthrough – plain-language description of each numbered notebook in execution order
• Usage – local (RStudio / rmarkdown::render) and HPC (SLURM submit_jobs.sh) instructions
• Dependencies – key R packages with source (CRAN/Bioconductor) and purpose
• Authors – credits Simone Zaghen (NYU)

[davidgresham]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Resolved. The conflict was in README.md — both this branch and main had added a README independently. I merged main into this branch and kept main's version (from the already-merged PR #1), which is the more comprehensive one. The merge commit is 274d563.