Documentation fixes (bug #1439)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2722 65c4cc65-6c06-0410-ace0-fbb531ad65f3

contrib/README.festival

@@ -11,10 +11,18 @@ You need :
 1.4.2 RELEASE are included. The patch adds a new command to festival 
 (asterisk_tts). 
 
-2) My patches to asterisk that provide variable substitution and quoting to 
-the Asterisk Extension Logic. This is not really a requirement, but without
-this, app_festival is mostly useless (you could very well use prerecorded
-voices for static information). 
+
+2) You may wish to obtain and install the asterisk-perl
+module by James Golovich <james@gnuinter.net>, from 
+either CPAN, or his site: http://asterisk.gnuinter.net,
+as this contains a good example of how variable text
+can be tts'd via asterisk, namely the examples/tts-*.agi
+files there. It has been noted that the current expression
+evaluation capabilities of asterisk are not best suited
+for the generation and manipulation of text. AGI scripting
+can be ideal for these sorts of needs. For simpler usage,
+fixed, pre-recorded messages may be more amenable for your
+purposes.
 
 3) Before running asterisk, you have to run festival-server with a command 
 like :