button: fixes button styles so that <a> and <button> examples look identical
button: fixes button styles so that <a> and <button> examples look identical

mike1o1/ember-material-design,jhr007/ember-material-design,sumn2u/ember-material-design,sumn2u/ember-material-design,jhr007/ember-material-design,mize85/ember-material-design,mike1o1/ember-material-design,mize85/ember-material-design