diff --git a/README b/README
index bb1a3cd..0e0323c 100644
--- a/README
+++ b/README
@@ -3,12 +3,43 @@ guile-csv
 
 Guile csv reader
 
-* usage:
+==USAGE==
+
+* install
 ./configure && make
 sudo make install
 
+* read csv
 (use-modules (csv))
 (define my-csv-reader (make-csv-reader #:\,))
 (call-with-input-file "file.csv" my-csv-reader)
 
+* csv->xml
+(call-with-input-file "file.xml" csv->xml)
+
+and file.xml could be:
+<record-0>
+ <name>aaa</name>
+ <age>11</age>
+ <email>aaa@aaa.com</email>
+</record-0>
+<record-1>
+ <name>bbb</name>
+ <age>12</age>
+ <email>bbb@bbb.com</email>
+</record-1>
+
+* sxml->csv or csv-write to output a csv format file
+(call-with-output-file "file.csv"
+ (lambda (port)
+  (sxml->csv 
+   '((name age email) ("aaa" "11" "aaa@aaa.com") ("bbb" "12" "bbb@bbb.com"))
+   port)))
+
+and file.csv would be:
+
+name,age,email
+aaa,11,aaa@aaa.com
+bbb,12,bbb@bbb.com
+
 Enjoy!
diff --git a/pkg-list.scm b/pkg-list.scm
index a6b888b..a016153 100644
--- a/pkg-list.scm
+++ b/pkg-list.scm
@@ -14,7 +14,7 @@
 ;;  You should have received a copy of the GNU General Public License
 ;;  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-(package (csv (0 0 1))
+(package (csv (0 0 2))
   (depends (csv))
   (synopsis "Guile csv reader")
   (description