[Doc] translate SubmitBar && GoodsAction (#367)

packages/locale/lang/en-US.js

@@ -68,5 +68,8 @@ export default {
     pullingText: 'Pull to refresh...',
     loosingText: 'Loose to refresh...',
     loadingText: 'Loading...'
+  },
+  vanSubmitBar: {
+    label: 'Total：'
   }
 };

packages/locale/lang/zh-CN.js

@@ -72,5 +72,8 @@ export default {
     pullingText: '下拉即可刷新...',
     loosingText: '释放即可刷新...',
     loadingText: '加载中...'
+  },
+  vanSubmitBar: {
+    label: '合计：'
   }
 };

packages/submit-bar/index.vue

@@ -7,7 +7,7 @@
       <slot />
       <div class="van-submit-bar__price">
         <template v-if="hasPrice">
-          <span class="van-submit-bar__price-text">合计：</span>
+          <span class="van-submit-bar__price-text">{{ label || $t('label') }}</span>
           <span class="van-submit-bar__price-interger">¥{{ priceInterger }}.</span>
           <span class="van-submit-bar__price-decimal">{{ priceDecimal }}</span>
         </template>
@@ -33,6 +33,7 @@ export default {
     tip: String,
     type: Number,
     price: Number,
+    label: String,
     loading: Boolean,
     disabled: Boolean,
     buttonText: String,