Change stable release to SRS2
Change stable release to SRS2

ossrs/srs,ossrs/srs,winlinvip/srs,ossrs/srs,ossrs/srs,winlinvip/srs,winlinvip/simple-rtmp-server,winlinvip/srs,winlinvip/srs,ossrs/srs,winlinvip/srs,ossrs/srs,winlinvip/srs