update readme, add hls(audio-only) support to readme. update sample flv from h264+mp3 to h264+aac

@@ -11,7 +11,7 @@ minimum run. see [Build](https://github.com/winlinvip/simple-rtmp-server/wiki/Bu
 
 SRS supports [vhost](https://github.com/winlinvip/simple-rtmp-server/wiki/RtmpUrlVhost), 
 rtmp([encoder push](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryRTMP), client/edge pull), ingester(srs pull), 
-[HLS](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryHLS), [transcoding](https://github.com/winlinvip/simple-rtmp-server/wiki/FFMPEG), 
+[HLS](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryHLS), HLS audio only, [transcoding](https://github.com/winlinvip/simple-rtmp-server/wiki/FFMPEG), 
 [forward](https://github.com/winlinvip/simple-rtmp-server/wiki/FFMPEG), [http hooks](https://github.com/winlinvip/simple-rtmp-server/wiki/HTTPCallback).
 
 Blog: [http://blog.csdn.net/win_lin](http://blog.csdn.net/win_lin) <br/>
@@ -75,47 +75,48 @@ Supported operating systems and hardware:
 * All handware.
 
 ### Summary
-1. Simple: also stable enough.<br/>
-2. [High-performance](https://github.com/winlinvip/simple-rtmp-server/wiki/Performance): single-thread, async socket, event/st-thread driven.<br/>
-3. With RTMP edge server, support origin server.<br/>
-4. RTMP without vod streaming, live streaming only.<br/>
-5. With multiple processes, support single process.<br/>
-6. Support vhost, support \_\_defaultVhost\_\_.<br/>
-7. Support adobe rtmp live streaming.<br/>
-8. Support apple [HLS(m3u8)](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryHLS) live streaming.<br/>
-9. Support reload config to enable changes.<br/>
-10. Support cache last gop for flash player to fast startup.<br/>
-11. Support listen at multiple ports.<br/>
-12. Support long time(>4.6hours) publish/play.<br/>
-13. High performace, 1800 connections(500kbps), 900Mbps, CPU 90.2%, 41MB<br/>
-14. Support forward publish stream to build active-standby [cluster](https://github.com/winlinvip/simple-rtmp-server/wiki/Cluster).<br/>
-15. Support broadcast by forward the stream to other servers(origin/edge).<br/>
-16. Support live stream transcoding by ffmpeg.<br/>
-17. Support live stream forward(acopy/vcopy) by ffmpeg.<br/>
-18. Support ffmpeg filters(logo/overlay/crop), x264 params, copy/vn/an.<br/>
-19. Support audio transcode only, speex/mp3 to aac<br/>
-20. Support [http callback api hooks](https://github.com/winlinvip/simple-rtmp-server/wiki/HTTPCallback)(for authentication and injection).<br/>
-21. Support bandwidth test api and flash client.<br/>
-22. Player, publisher(encoder), and demo pages(jquery+bootstrap). <br/>
-23. Demo video meeting or chat(SRS+cherrypy+jquery+bootstrap). <br/>
-24. Full documents in wiki, in chineses. <br/>
-25. Support RTMP(play-publish) library: srs-librtmp<br/>
-26. Support ARM([debian armhf, v7cpu](https://github.com/winlinvip/simple-rtmp-server/wiki/SrsLinuxArm)) with rtmp/ssl/hls/librtmp.<br/>
-27. [plan] Support system utest<br/>
-28. [plan] Support embeded http server for api and hls(live/vod)<br/>
-29. [plan] Support vod(file to hls stream)<br/>
-30. [plan] Support stream ingester using ffmpeg.<br/>
-31. [plan] Support ingest RTSP(RTP, SDP) stream to RTMP.<br/>
-32. [plan] Support network based cli and json result.<br/>
-33. [plan] Support HLS cluster, use RTMP ATC to generate the TS<br/>
-34. [plan] Support RTMP edge server, push/pull stream from any RTMP server<br/>
-35. [plan] Support multiple processes, for both origin and edge<br/>
-36. [no-plan] Support adobe flash refer/token/swf verification.<br/>
-37. [no-plan] Support adobe amf3 codec.<br/>
-38. [no-plan] Support dvr(record live to vod file)<br/>
-39. [no-plan] Support encryption: RTMPE/RTMPS, HLS DRM<br/>
-40. [no-plan] Support RTMPT, http to tranverse firewalls<br/>
-41. [no-plan] Support file source, transcoding file to live stream<br/>
+01. Simple: also stable enough.<br/>
+02. [High-performance](https://github.com/winlinvip/simple-rtmp-server/wiki/Performance): single-thread, async socket, event/st-thread driven.<br/>
+03. With RTMP edge server, support origin server.<br/>
+04. RTMP without vod streaming, live streaming only.<br/>
+05. With multiple processes, support single process.<br/>
+06. Support vhost, support \_\_defaultVhost\_\_.<br/>
+07. Support adobe rtmp live streaming.<br/>
+08. Support apple [HLS(m3u8)](https://github.com/winlinvip/simple-rtmp-server/wiki/DeliveryHLS) live streaming.<br/>
+09. Support HLS audio-only live streaming.<br/>
+10. Support reload config to enable changes.<br/>
+11. Support cache last gop for flash player to fast startup.<br/>
+12. Support listen at multiple ports.<br/>
+13. Support long time(>4.6hours) publish/play.<br/>
+14. High performace, 1800 connections(500kbps), 900Mbps, CPU 90.2%, 41MB<br/>
+15. Support forward publish stream to build active-standby [cluster](https://github.com/winlinvip/simple-rtmp-server/wiki/Cluster).<br/>
+16. Support broadcast by forward the stream to other servers(origin/edge).<br/>
+17. Support live stream transcoding by ffmpeg.<br/>
+18. Support live stream forward(acopy/vcopy) by ffmpeg.<br/>
+19. Support ffmpeg filters(logo/overlay/crop), x264 params, copy/vn/an.<br/>
+20. Support audio transcode only, speex/mp3 to aac<br/>
+21. Support [http callback api hooks](https://github.com/winlinvip/simple-rtmp-server/wiki/HTTPCallback)(for authentication and injection).<br/>
+22. Support bandwidth test api and flash client.<br/>
+23. Player, publisher(encoder), and demo pages(jquery+bootstrap). <br/>
+24. Demo video meeting or chat(SRS+cherrypy+jquery+bootstrap). <br/>
+25. Full documents in wiki, in chineses. <br/>
+26. Support RTMP(play-publish) library: srs-librtmp<br/>
+27. Support ARM([debian armhf, v7cpu](https://github.com/winlinvip/simple-rtmp-server/wiki/SrsLinuxArm)) with rtmp/ssl/hls/librtmp.<br/>
+28. [plan] Support system utest<br/>
+29. [plan] Support embeded http server for api and hls(live/vod)<br/>
+30. [plan] Support vod(file to hls stream)<br/>
+31. [plan] Support stream ingester using ffmpeg.<br/>
+32. [plan] Support ingest RTSP(RTP, SDP) stream to RTMP.<br/>
+33. [plan] Support network based cli and json result.<br/>
+34. [plan] Support HLS cluster, use RTMP ATC to generate the TS<br/>
+35. [plan] Support RTMP edge server, push/pull stream from any RTMP server<br/>
+36. [plan] Support multiple processes, for both origin and edge<br/>
+37. [no-plan] Support adobe flash refer/token/swf verification.<br/>
+38. [no-plan] Support adobe amf3 codec.<br/>
+39. [no-plan] Support dvr(record live to vod file)<br/>
+40. [no-plan] Support encryption: RTMPE/RTMPS, HLS DRM<br/>
+41. [no-plan] Support RTMPT, http to tranverse firewalls<br/>
+42. [no-plan] Support file source, transcoding file to live stream<br/>
 
 ### Performance
 1.  300 connections, 150Mbps, 500kbps, CPU 18.8%, MEM 5956KB.