change: config.yaml always from the latest version of apisix (#66)

diff --git a/example/README.md b/example/README.md
index bf54b6d..852af22 100644
--- a/example/README.md
+++ b/example/README.md
@@ -1,6 +1,8 @@
 ### Run
 
 ```
+$ chmod +x config.sh
+$ sh config.sh
 $ docker-compose -p docker-apisix up -d
 ```
 
diff --git a/example/config.sh b/example/config.sh
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/example/config.sh