Demo data

[LizzyParkerPannell]

• [ ] find a way to upload .mzML (currently too big for github!) link to external hosting?
• [ ] upload .mzML converted files and treatments.csv and samplelist.csv
• [ ] upload peak table created with MassUp
• [ ] create demo data README.txt including link to paper and thesis and citation info

[LizzyParkerPannell]

update: @HeatherJWalker has uploaded a MALDI dataset to dryad https://datadryad.org/stash/dataset/doi:10.5061/dryad.dbrv15f5c

We need to add reference/ directions to this into the appropriate places