demo.py: nuke resets the tracker, not the server, also rewrote

         paragraph about editing host name in demo config

Author: techtonik

roundup/demo.py

@@ -127,13 +127,12 @@ def run_demo(home):
 1. Log in as "demo"/"demo" or "admin"/"admin".
 2. Hit Control-C to stop the server.
 3. Re-start the server by running "%(script)s" again.
-4. Re-initialise the server by running "%(script)s nuke".
+4. Reset the tracker by running "%(script)s nuke".
 
-Demo tracker is set up to be accessed by localhost browser.  If you
-run demo on a server host, please stop the demo, open file
-"%(datadir)s/config.ini" with your editor, change the host name in the "web"
-option in section "[tracker]", save the file, then re-run the demo
-program. If you want to change backend types, you must use "nuke".
+Demo tracker is set up to be accessed from localhost. If run it on a
+server, please edit "%(datadir)s/config.ini" and set the
+"web" option in section "[tracker]" to your host name, then restart
+demo. If you want to change backend types, you must use "nuke".
 
 ''' % dict(url=url, script=sys.argv[0], datadir=TRACKER_HOME)