add macro

Author: azu

Diff for: README.md

@@ -17,10 +17,15 @@ Twitterのハッシュタグは[#js_plugin_book](https://twitter.com/search?f=tw
 
 更新情報は[RSS](https://github.com/azu/JavaScript-Plugin-Architecture/releases.atom)や[リリースノート](https://github.com/azu/JavaScript-Plugin-Architecture/releases)から見ることができます。
 
+
 <!-- textlint-disable -->
 
+{% if output.name != "ebook" %}
+
 <a aria-label="Star azu/JavaScript-Plugin-Architecture on GitHub" href="https://github.com/azu/JavaScript-Plugin-Architecture" class="github-button"><img src="https://monosnap.com/file/MZsfLjZNkSNwTJ33apkwpBjlBZLbSh.png" alt="GitHub"></a> <a href="http://b.hatena.ne.jp/entry/https://github.com/azu/JavaScript-Plugin-Architecture" class="hatena-bookmark-button" data-hatena-bookmark-title="JavaScript Plugin Architecture" data-hatena-bookmark-layout="standard-balloon" data-hatena-bookmark-lang="ja" title="はてなブックマークに追加"><img src="https://b.st-hatena.com/images/entry-button/[email protected]" alt="はてなブックマークに追加" width="20" height="20" style="border: none;" /></a>
 
+{% endif %}
+
 <!-- textlint-enable -->