update readme

@@ -34,7 +34,7 @@ step 5(optional): start http hooks for srs callback <br/>
 <pre>
 python ./research/api-server/server.py 8085
 </pre>
-step 5: publish live stream <br/>
+step 6: publish live stream <br/>
 <pre>
 FMS URL: rtmp://127.0.0.1:1935/live
 Stream:  livestream
@@ -46,7 +46,7 @@ For example, use ffmpeg to publish:
         sleep 1; \
     done
 </pre>
-step 6: add server ip to client hosts as demo. <br/>
+step 7: add server ip to client hosts as demo. <br/>
 <pre>
 # edit the folowing file:
 # linux: /etc/hosts
@@ -54,19 +54,19 @@ step 6: add server ip to client hosts as demo. <br/>
 # where server ip is 192.168.2.111
 192.168.2.111 demo 
 </pre>
-step 7: play live stream. <br/>
+step 8: play live stream. <br/>
 <pre>
 rtmp url: rtmp://demo:1935/live/livestream
 m3u8 url: http://demo:80/live/livestream.m3u8
 </pre>
-step 8: play live stream auto transcoded<br/>
+step 9: play live stream auto transcoded<br/>
 <pre>
 rtmp url: rtmp://demo:1935/live/livestream_ld
 m3u8 url: http://demo:80/live/livestream_ld.m3u8
 rtmp url: rtmp://demo:1935/live/livestream_sd
 m3u8 url: http://demo:80/live/livestream_sd.m3u8
 </pre>
-step 9: play live stream auto forwarded, the hls dir change to /forward<br/>
+step 10: play live stream auto forwarded, the hls dir change to /forward<br/>
 <pre>
 rtmp url: rtmp://demo:19350/live/livestream
 m3u8 url: http://demo:80/forward/live/livestream.m3u8