searching in `rendered` with an empty string

[lorensr]

On https://bulletproofmeteor.com/database-modeling/building-a-real-world-search-app-meteor-package-search/2

you have

Template.searchResult.rendered = function() {
  PackageSearch.search('');
};

But when I take this line out, it seems to still work. Is this line helpful? If so, why? (And it should be added to the README if it should be there.)

[pauljohncleary]

The search won't send a request automatically, hence if you have a default set of results to show before the user types in the search box, you need to initialise the search with a blank string to get your first set of results.

If anyone has a better way of doing this let me know.