code: function HtAuth (opts) {
  	if(!(this instanceof HtAuth)) {
  		return HtAuth.create(opts);
  	}
  
  	opts = opts || defaultOpts;
  	this.file = opts.file || defaultOpts.file;
  }
docs: Constructor
  @param opts {Object}
  opts = {file: <path to a htpasswd file}