automating creating the yaml file

[evelyn-schmidt]

• give a directory with the tumor_dna, tumor_rna, and normal_dna
• use pyyaml package?
• give option for user to supply the path the location of the files
• has to handle data on both google cloud (JLF) and local file structure (WashU)
• also have the user supply where the data is from. e.i. washu, bostongene, cegat etc