Added explanation for rendering of multiple values (vuejs#909)

Paul Verbeek-Mast · kazupon · commit 8ca28376ed5e · 2017-05-16T16:27:34.000+09:00
diff --git a/src/v2/guide/class-and-style.md b/src/v2/guide/class-and-style.md
@@ -202,3 +202,5 @@ Starting in 2.3 you can provide an array of multiple (prefixed) values to a styl
 ``` html
 <div v-bind:style="{ display: ['-webkit-box', '-ms-flexbox', 'flex'] }">
 ```
+
+This will only render the last value in the array which the browser supports. In this example, it will render `display: flex` for browsers that support the unprefixed version of flexbox.
