angular/material — pull request #558 by ThomasBurleson (2014-11-06 16:14:33+00:00)
Title: enhance(button): styles, aria, and attribute improvements

Updated $mdAria.expect() api
Improved styles for hover and disabled
Improved support for aria-label and tabindex
Improved support for ng-disabled and disabled
Improved support for ng-binding for labels
Improved md-button demos to include dynamic labels
Improved unit tests