Bug, feature request, or proposal:

Feature request

What is the expected behavior?

User able to search/filter the options in a select

What is the current behavior?

User must scroll the select to find the desired option

What is the use-case or motivation for changing an existing behavior?

When there is a long list of options, it's not easy to find an option

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Latest Angular Material as of 12 July 2017

Is there anything else we should know?

This is different from autocomplete, autocomplete is a free-text input field.

I haven't found anything in Material Design related to this, but this could be an important feature