Use ~ instead of ~>
Replace non-existent repository with this repo
Change 'repourl' to 'location', to prepare for getting trees locally, as well as from github
Remove unused old radial tree file
Rename file to digest_spreadsheet.coffee, in preparation for writing to dirs and files, as well as writing JSON
As well as creating JSON, create hierarchy of directories, populated with a stub file so that git recognizes the dir.