README.rdoc in writeexcel-0.6.13 vs README.rdoc in writeexcel-0.6.14

@@ -74,9 +74,12 @@
 
 You must save source file in UTF8 and run ruby with -Ku option or set $KCODE='u'
 when use urf8 string data.
 
 == Recent Changes
+v0.6.14
+* Buf fix Issues 20. If more than 10 sheets, sheet reference mix up
+
 v0.6.13
 * Bug fix issue 19. Workbook#store_num_format, format written in utf8 raise exception.
 
 v0.6.12
 * Bug fix issue 17. Worksheet#store_formula shouldn't be private