option for irc password

MarkovBot.pl

@@ -126,6 +126,7 @@ MarkovBot->new(
   server => config("irc_server"),
   port => config("irc_port"),
   channels => config("irc_channels"),
+  password => config("irc_password") ? config("irc_password") : undef,
 
   nick => config("irc_nickname"),
   alt_nicks => [config("irc_nickname2")],

config.default.yml

@@ -27,6 +27,7 @@ irc_channels:
   - "#foo"
   - "#bar"
   - "#baz"
+# irc_password: hunter2
 
 #
 # RNG to use