Small documentation changes

Author: nicolasff

README.markdown

@@ -56,6 +56,13 @@ session.save_path = "tcp://host1:6379?weight=1, tcp://host2:6379?weight=2&timeou
 Sessions have a lifetime expressed in seconds and stored in the INI variable "session.gc_maxlifetime". You can change it with [`ini_set()`](http://php.net/ini_set).
 The session handler requires a version of Redis with the `SETEX` command (at least 2.0).
 
+
+Distributed Redis Array
+=======================
+
+See [dedicated page](https://github.com/nicolasff/phpredis/blob/master/arrays.markdown#readme).
+
+
 Error handling
 ==============
 

arrays.markdown

@@ -68,7 +68,7 @@ $ra->set("user2:name", "Mike");
 ## Key hashing
 By default and in order to be compatible with other libraries, phpredis will try to find a substring enclosed in curly braces within the key name, and use it to distribute the data.
 
-For instance, the keys “{user:1}:name” and “{user:1}:email” will be stored on the same server as only “user:1” will be hashed. You can provide a custom function name in your redis array with the "function" option; this function will be called every time a key needs to be hashed.
+For instance, the keys “{user:1}:name” and “{user:1}:email” will be stored on the same server as only “user:1” will be hashed. You can provide a custom function name in your redis array with the "function" option; this function will be called every time a key needs to be hashed. It should take a string and return a string.
 
 
 ## Migrating keys