Ruby binding available

diff --git a/rbejdb/README.md b/rbejdb/README.md
index ec45c46..048e10b 100644 (file)
--- a/rbejdb/README.md
+++ b/rbejdb/README.md
@@ -7,7 +7,7 @@ Installation
 **Required tools/system libraries:**
 
 * gcc
-* **ruby >= 1.9.1**
+* **ruby >= 1.9.1 and ruby-dev**
 * EJDB C library **libtcejdb** ([from sources](https://github.com/Softmotions/ejdb#manual-installation) or as [debian packages](https://github.com/Softmotions/ejdb/wiki/Debian-Ubuntu-installation))
 
 **(A) Installing directly from sources**