remove parseCommaParam function in populate

[tguelcan]

restify-mongoose/index.js

Line 208 in 1c01c5b

query = query.populate(parseCommaParam(populate));

My suggestion is to remove the parseCommaParam function because the benefit is greater to use the population function like populate({ path: 'author', select: 'name' })...

Band.
  find({}).
  populate({ path: 'members', select: 'name' }).
  exec(function(error, bands) {
    // Won't work, foreign field `band` is not selected in the projection
  });

Source https://mongoosejs.com/docs/populate.html