Update README.md

Author: fjh1997

README.md

@@ -1,5 +1,7 @@
 # CTF Wiki
 
+now have a try
+
 [![Build Status](https://travis-ci.org/ctf-wiki/ctf-wiki.svg?branch=master)](https://travis-ci.org/ctf-wiki/ctf-wiki)
 [![Requirements Status](https://requires.io/github/ctf-wiki/ctf-wiki/requirements.svg?branch=master)](https://requires.io/github/ctf-wiki/ctf-wiki/requirements/?branch=master)
 [![Slack](https://img.shields.io/badge/slack-join%20chat-brightgreen.svg)](https://join.slack.com/t/ctf-wiki/shared_invite/enQtNTkwNDg5NDUzNzAzLTQ3YTliNzI5OGNhM2NmNzI3NTU0YWRlNWFkY2EzYTExN2Y3ZjRkNzYzYmRhNDNlYmY5YTVmNjNhYjliZDgyNTY)