Update the README some more

README.md

@@ -11,7 +11,10 @@ backends
 
 ### Basic Usage
 ```php
+<?php
 // Create the pool
+// $config is the configuration array
+// $logger is an optional psr/log compatible logger
 $pool = new Aviat\Banker\Pool($config, $logger);
 
 // Grab an item from the cache
@@ -37,7 +40,8 @@ which server to connect to. Regardless of the backend, the basic
 structure is like so:
 
 ```php
-[
+<?php
+$config = [
 	'driver' => 'null', // null, redis, memcache, memcached
 	'connection' => [
 		// driver setup, see below for the structure for each
@@ -48,18 +52,19 @@ structure is like so:
 		// Set additional driver-specific options, like persistence for
 		// Memcached, or a prefix for Redis keys
 	]
-]
+];
 ```
 
 Below are the connection arrays for each backend:
 
 Memcache / Memcached:
 ```php
-[
+<?php
+$config['connection'] = [
 	'host' => 'localhost', // hostname or socket
 	'port' => 11211,       // Port needs to be 0 if socket
 	'persistent' => false, // Use persistent connection
-]
+];
 ```
 
 Redis: