Fixed up `writecsv.R` to write out to a single, very large file, so that the `sed` command in the `bash` script (`build_db`) can just pull chunks of lines.
Fixed up `writecsv.R` to write out to a single, very large file, so that the `sed` command in the `bash` script (`build_db`) can just pull chunks of lines.

SimonGoring/EC_Network,SimonGoring/EC_Network,SimonGoring/EC_Network