Add markdown template (#209)

.github/readme/partials/introduction.md

@@ -55,7 +55,7 @@ And you can customize these heavily with plugins, templates and hundreds of opti
 <% } %>
 <% {
   let cell = 0
-  const elements = Object.entries(templates).filter(([key, value]) => value)
+  const elements = Object.entries(templates).filter(([key, value]) => (value)&&(!["community"].includes(key)))
 %>
 <table>
   <tr>
@@ -83,5 +83,13 @@ And you can customize these heavily with plugins, templates and hundreds of opti
 <%      if (cell === "odd") {
 -%>  </tr>
 <% }}} -%>
+  <tr>
+    <th colspan="2"><a href="source/templates/community/README.md"><%= templates.community.name -%></a></th>
+  </tr>
+  <tr>
+    <td colspan="2" align="center">
+      <%- templates.community.readme.demo.replace(/<img src=/g, `<img alt="" width="400" src=`)?.split("\n")?.map((x, i) => i ? `  ${x}` : x)?.join("\n") %>
+    </td>
+  </tr>
 </table>
 <% } %>