Merge branch 'checkbox_tabindex' of github.com:Xotic750/iview into checkbox_tabindex

src/components/checkbox/checkbox.vue

@@ -14,7 +14,9 @@
                 :value="label"
                 v-model="model"
                 :name="name"
-                @change="change">
+                @change="change"
+                @focus="$el.focus()"
+            >
             <input
                 v-if="!group"
                 type="checkbox"
@@ -23,7 +25,9 @@
                 :disabled="disabled"
                 :checked="currentValue"
                 :name="name"
-                @change="change">
+                @change="change"
+                @focus="$el.focus()"
+            >
         </span>
         <slot><span v-if="showSlot">{{ label }}</span></slot>
     </label>