readme.txt in rjb-1.5.3 vs readme.txt in rjb-1.5.4

- old
+ new

@@ -1,6 +1,8 @@
 Rjb is Ruby-Java bridge using Java Native Interface.
 
+http://www.slideshare.net/artonx/j-ruby-kaigi-2010
+
 How to install
 
 you need to install Java2 sdk, and setup JAVA_HOME enviromental varible except for OS X.
 I assume that OS X's JAVA_HOME is reported by calling /usr/libexec/java_home.
 