feature: 增加 tags 標簽外掛 - label

improvement: 優化 pjax 下 404 頁面

scripts/tag/label.js

@@ -0,0 +1,16 @@
+/**
+ * Butterfly
+ * label
+ * {% label text color %}
+ */
+
+'use strict'
+
+function addLabel (args, content) {
+  const text = args[0]
+  const className = args[1] || 'default'
+
+  return `<mark class="hl-label ${className}">${text}</mark> `
+}
+
+hexo.extend.tag.register('label', addLabel, { ends: false })