add mirror location

diff --git a/README.txt b/README.txt
index 93b8cfc..1daa7bd 100755 (executable)
--- a/README.txt
+++ b/README.txt
@@ -1,4 +1,8 @@
 \r
 xerial-core project\r
 \r
+Git Mirror:\r
+ SourceForge.jp:  git://git.sourceforge.jp/gitroot/xerial/xerial-core.git\r
+ GitWeb:          http://git.sourceforge.jp/view?p=xerial/xerial-core.git\r
+\r
 \r