
Adds a dropdown menu button as shown in the Material design spec here: https://www.google.com/design/spec/components/buttons.html#buttons-dropdown-buttons. It's the video at the bottom of this section of the Material design spec. This version of the component doesn't deal with scrollable menus or constrain the height of the menu.
Small examples of the Flutter widget framework ============================================== To run these, open a terminal in this directory and use the following command: ```bash pub global activate flutter flutter start --checked -t foo.dart ``` ...where `foo.dart` is the file you want to run.