Simplify factions.m using new bar_faction.m
Move vim modeline from README.md to .vimrc
Increase textwidth of README.md to 80
Whitespace: add-copyright-notice.sh
Dumb down add-copyright-notice.sh

Now it will simply inject the copyright notice on the first row for
manual placement. It will no longer care if there is already a copyright
notice in the file.