Fix timeout in mrc client and connector to avoid endless loop issue

xtrn/mrc/mrc-client.js

@@ -13,6 +13,8 @@ load('scrollbar.js');
 load('inputline.js');
 load(js.startup_dir + 'mrc-session.js');
 
+js.time_limit=0;
+
 var input_state = 'chat';
 
 var show_nicks = false;

xtrn/mrc/readme.txt

@@ -24,6 +24,7 @@ setup differs.
     Port=5000
     Options=STATIC | LOOP
     Command=../xtrn/mrc/mrc-connector.js
+    JavaScriptTimeLimit=0
 
 - In SCFG, add a new External Program with the following options, leaving all
   other options at their default values:
@@ -33,6 +34,12 @@ setup differs.
     Start-up Directory: /sbbs/xtrn/mrc
     Command Line: ?mrc-client.js
 
+- If you want to run from the chat menu instead of via a door, copy chat_sec.js to
+  /sbbs/mods and edit accordingly, adding the following and don't forget to add the
+  key to be used to the "keys" variable.
+
+     bbs.exec("?../xtrn/mrc/mrc-client.js",null,"/sbbs/xtrn/mrc/");	
+
 - Your services and BBS threads should automatically recycle once they are free
   to do so, but you may want to restart your BBS now to force these changes to
   take effect.