address review comment part2

Author: Vivian Hu

.gitignore

@@ -42,4 +42,4 @@ testem.log
 
 # schematics
 /src/lib/schematics/**/*.js
-/src/lib/schematics/**/*.map
+/src/lib/schematics/**/*.map

src/demo-app/list/list-demo.scss

@@ -2,7 +2,7 @@
   display: flex;
   flex-flow: row wrap;
 
-  .mat-list, .mat-nav-list, .mat-button-list, .mat-selection-list {
+  .mat-list, .mat-nav-list, .mat-selection-list {
     border: 1px solid rgba(0, 0, 0, 0.12);
     width: 350px;
     margin: 20px 20px 0 0;

src/lib/list/list.md

@@ -42,6 +42,20 @@ element in an `<mat-list-item>`.
 </mat-nav-list>
 ```
 
+### Action lists
+
+Use `mat-action-list` tags for action lists (i.e. lists that have button tags).
+
+Simple action lists can use the `mat-list-item` attribute on button tag elements directly:
+
+```html
+<mat-action-list>
+  <button mat-list-item  *ngFor="let link of links" (click)="alertItem(link.name)">
+    {{link.name}}
+  </button>
+</mat-action-list>
+```
+
 ### Selection lists
 A selection list provides an interface for selecting values, where each list item is an option.