stunnel: SSL connection timeout workaround (#52)

Workaround persistent connections being held by (massively) reducing
idle timeout in example `stunnel` configuration

docs/example-config/stunnel.conf

@@ -1,30 +1,24 @@
 ; Sample config for squeeze-alexa. Make sure it's suitable for your usage.
 ; In particular make sure you change MY-PORT and MY-HOSTNAME
-;
 
-; Some options used here may not be adequate for your particular configuration
-; Please make sure you understand them (especially the effect of chroot jail)
-
-; Certificate/key is needed in server mode and optional in client mode
-;cert = /opt/etc/stunnel/stunnel.pem
-;key = /opt/etc/stunnel/stunnel.pem
 
 ; Some security enhancements for UNIX systems - comment them out on Win32
 chroot = /Apps/opt/var/stunnel/
-;setuid = nobody
-;setgid = nobody
 ; PID is created inside chroot jail
 pid = /stunnel.pid
 
 ; Some performance tunings
 socket = l:TCP_NODELAY=1
 socket = r:TCP_NODELAY=1
-;compression = rle
 
+; Security
 options = NO_SSLv3
 options = NO_SSLv2
 options = DONT_INSERT_EMPTY_FRAGMENTS
 
+; Reduce connection problems on LMS (see Issue #52)
+TIMEOUTidle=7200
+
 ; Some debugging stuff useful for troubleshooting
 debug = 7
 output = stunnel.log