feat: add docsify-updated, close #158

docs/configuration.md

@@ -315,3 +315,18 @@ window.$docsify = {
   mergeNavbar: true
 }
 ```
+
+## format-updated
+We can display the file update date through **{docsify-updated<span>}</span>** variable. And format it by `formatUpdated`. 
+See https://github.com/lukeed/tinydate#patterns
+```js
+window.$docsify = {
+  formatUpdated: '{MM}/{DD} {HH}:{mm}',
+
+  formatUpdated: function (time) {
+    // ...
+
+    return time
+  }
+}
+```

docs/de-de/configuration.md

@@ -314,4 +314,19 @@ Navbar will be merged with the sidebar on smaller screens.
 window.$docsify = {
   mergeNavbar: true
 }
-```
+```
+
+## format-updated
+We can display the file update date through **{docsify-updated<span>}</span>** variable. And format it by `formatUpdated`. 
+See https://github.com/lukeed/tinydate#patterns
+```js
+window.$docsify = {
+  formatUpdated: '{MM}/{DD} {HH}:{mm}',
+
+  formatUpdated: function (time) {
+    // ...
+
+    return time
+  }
+}
+```

docs/index.html

@@ -34,6 +34,7 @@
     loadNavbar: true,
     mergeNavbar: true,
     maxLevel: 4,
+    subMaxLevel: 2,
     name: 'docsify',
     search: {
       noData: {
@@ -48,7 +49,14 @@
         '/': 'Search'
       }
     },
-    subMaxLevel: 2
+    formatUpdated: '{MM}/{DD} {HH}:{mm}',
+    plugins: [
+      function(hook) {
+        hook.beforeEach(function (html) {
+          return html += '> Last modified {docsify-updated}'
+        })
+      }
+    ]
   }
 </script>
 <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>

docs/zh-cn/configuration.md

@@ -326,3 +326,17 @@ window.$docsify = {
 }
 ```
 
+## format-updated
+我们可以显示文档更新日期通过 **{docsify-updated<span>}</span>** 变量. 并且格式化日期通过 `formatUpdated`. 
+参考 https://github.com/lukeed/tinydate#patterns
+```js
+window.$docsify = {
+  formatUpdated: '{MM}/{DD} {HH}:{mm}',
+
+  formatUpdated: function (time) {
+    // ...
+
+    return time
+  }
+}
+```