Error running `npm install`: syntax error and invalid comment in package.json

`npm install` from Git clone fails because of a syntax error (superfluous comma) in https://github.com/jwarkentin/node-monkey/blob/master/package.json#L31

After fixing that, `npm install` fails again, because of a comment: https://github.com/jwarkentin/node-monkey/blob/master/package.json#L29 in a place where it is not allowed, please see https://github.com/npm/npm/issues/4482#issuecomment-32289053 for more information.