create dev1 branch

SJP-github · SJP-github · commit 2bfc9b409440 · 2017-10-22T22:46:21.000+08:00
diff --git a/readme.txt b/readme.txt
@@ -12,4 +12,6 @@ fuck!why not？
 study git version control of tools
 可以输入中文？
 
-modify 3
+modify 3
+
+checkout a branch dev1!
