Reformat Markdown for Python highlighting.

README.md

@@ -10,7 +10,9 @@ easily.
 
 First, run a Redis server, of course:
 
+```console
 $ redis-server
+```
 
 To put jobs on queues, you don't have to do anything special, just define
 your typically lengthy or blocking function:
@@ -48,11 +50,13 @@ For a more complete example, refer to the [docs][d].  But this is the essence.
 To start executing enqueued function calls in the background, start a worker
 from your project's directory:
 
+```console
 $ rqworker
 *** Listening for work on default
 Got count_words_at_url('http://nvie.com') from default
 Job result = 818
 *** Listening for work on default
+```
 
 That's about it.