README.rdoc in writeexcel-0.6.10 vs README.rdoc in writeexcel-0.6.11

@@ -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
+v0.6.11
+* Bug fix issue 15. Worksheet#write_comment on the same row overwrite other comments.
+
 v0.6.10
 * Bug fix. method missing split_string_setup() in shared_string_table.rb. see https://github.com/cxn03651/writeexcel/pull/13
 
 v0.6.9
 * Bug fix. When sheetname is cell's A1 notation such as 'D1', Worksheet#autofilter causes exception.