update

update

README.md

@@ -97,6 +97,7 @@ By default following extensions are installed.
 * xml
 * xmlrpc
 * gd
+* bcmath
 
 > If you want to install more extension, just update `./bin/webserver/Dockerfile`. You can also generate a PR and we will merge if seems good for general purpose.
 > You have to rebuild the docker image by running `docker-compose build` and restart the docker containers.
@@ -109,6 +110,3 @@ http://localhost:8080/
 username: root  
 password: tiger
 
-## Redis
-
-It comes with Redis. It runs on default port `6379`.