Add cpan install note to perl README.

Author: Lanzaa

perl/README.md

@@ -9,8 +9,12 @@ To successfully use the examples you will need a running RabbitMQ server.
 
 To run this code you need to intall Net::RabbitFoot
 
+    cpan -i Net::RabbitFoot
+
 For tutorial six UUID::Tiny needs to be installed.
 
+    cpan -i UUID::Tiny
+
 ## Code
 
 [Tutorial one: "Hello World!"](http://www.rabbitmq.com/tutorial-one-python.html):