Changed nginx dir to default, to be replaced with sed.
Changed nginx dir to default, to be replaced with sed.

User runs a sed command in the README.md to fill in their millstone dir.

woodymit/millstone_accidental_source,churchlab/millstone,churchlab/millstone,woodymit/millstone,woodymit/millstone,woodymit/millstone,woodymit/millstone,woodymit/millstone_accidental_source,woodymit/millstone_accidental_source,churchlab/millstone,woodymit/millstone_accidental_source,churchlab/millstone