[svnpenn]

github.com/svnpenn/etc/commit/a712

Auto detect when RtmpSrv has found parameters

Until now the script has invoked RtmpSrv, then waited for the user to notify the
script when RtmpSrv has captured the parameters.

Using a coprocess the script will now automatically monitor the RtmpSrv process
once its been started. Once the command has been detected it will automatically
exit RtmpSrv and invoke RtmpDump.

Also now that process substitution is not being used we can utilize the slightly
faster #!/bin/sh over #!/bin/bash

Tested with
concertgebouw.nl/live?event=25417
showtvnet.com/player/index.asp?ptype=1
teamcoco.com/video/full-episode-thurs-6/21-seth-meyers-jordana-brewster-and-musical-guests-the-avett-brothers