From 11c6d56df55d82011aa38dfe1c83734f50663987 Mon Sep 17 00:00:00 2001
From: sudoyu <sudo.yu@gmail.com>
Date: Mon, 2 Jun 2014 11:32:59 +0900
Subject: [PATCH] Update index for Groovy/Gradle/Grails.

---
 free-programming-books-ja.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/free-programming-books-ja.md b/free-programming-books-ja.md
index 2ba8778f7..980640077 100644
--- a/free-programming-books-ja.md
+++ b/free-programming-books-ja.md
@@ -25,6 +25,9 @@
 * [Erlang](#erlang)
 * [Git](#git)
 * [Go](#go)
+* [Groovy](#groovy)
+    * [Gradle](#gradle)
+    * [Grails](#grails)
 * [Haskell](#haskell)
 * [Haxe](#haxe)
 * [iOS](#ios)