Pipelines Cleanup

[damonbayer]

Given the lack of progress on #48, I think we are overdue for a cleanup of the pipelines directory.

We should

• Put scripts into folders
  • Pre-processing
  • Model fitting
  • Post-Processing
  • Collation
• Rename files that are specific to certain models to communicate that in the file name
• Add some sort of header comment in each file that briefly describes what each file does

This should be done in concert with #235

• add a readme

[dylanhmorris]

Add some sort of header comment in each file that briefly describes what each file does
For Python this can and should be the script docstring (before imports, after shebang if any):

#!/usr/bin/env python3 
"""
What this script does
"""

import mylibrary as ml

For R, roxygen-style comment at the top?

#!/usr/bin/env Rscript
#' This script does things