API docs - give some details about the the 'cache' configuration and …

…what happens with catbox

API.md

@@ -101,11 +101,11 @@ Creates a new `Server` object where:
       includes a default cache for storing application state. By default, a simple memory-based
       cache is created which has limited capacity and capabilities. **hapi** uses
       [**catbox**](https://github.com/hapijs/catbox) for its cache which includes support for
-      common storage solutions (e.g. Redis, MongoDB, Memcached, and Riak). Caching is only utilized
+      common storage solutions (e.g. Redis, MongoDB, Memcached, Riak, among others). Caching is only utilized
       if methods and [plugins](#plugins) explicitly store their state in the cache. The server
       cache configuration only defines the storage container itself. `cache` can be assigned:
         - a prototype function (usually obtained by calling `require()` on a **catbox** strategy
-          such as `require('catbox-redis')`).
+          such as `require('catbox-redis')`). A new **catbox** [client](https://github.com/hapijs/catbox#client) will be created internally using this function.
         - a configuration object with the following options:
             - `engine` - a prototype function or **catbox** engine object.
             - `name` - an identifier used later when provisioning or configuring caching for