Refactor Dashboard.

src/views/dashboard/Dashboard.vue

@@ -197,6 +197,7 @@
                 type="textarea"
                 :autosize="{ minRows: 8 }"
                 v-model="journal.content"
+                placeholder="写点什么吧..."
               />
             </a-form-item>
             <a-form-item>

src/views/system/About.vue

@@ -12,7 +12,7 @@
                 </h3>
                 <template slot="description">
                   <ul>
-                    <li>版本：1.0</li>
+                    <li>版本：{{ environments.version }}</li>
                     <li>数据库：{{ environments.database }}</li>
                     <li>启动时间：{{ environments.startTime | moment }}</li>
                   </ul>