fixes for yargs 17
fixes for yargs 17

require('yargs/yargs') is no longer a constructor.  Rename variables and
avoid using the new operator.

Signed-off-by: Kevin Locke <ffb4761cba839470133bee36aeb139f58d7dbaa9@kevinlocke.name>

kevinoid/promised-read,kevinoid/promised-read,kevinoid/node-project-template,kevinoid/appveyor-status,kevinoid/promised-read,kevinoid/appveyor-status,kevinoid/node-project-template,kevinoid/node-project-template,kevinoid/appveyor-status