Update readme and todo

Author: MichaelRoosz

README.md

@@ -1,12 +1,12 @@
 Cassandra client library for PHP 
 ================================
 
-Cassandra client library for PHP, which supports Protocol v5 (Cassandra 4.x) and asynchronous requests.
+Cassandra client library for PHP, which supports Protocol v5 (Cassandra 4.x, 5.x) and asynchronous requests.
 
 https://packagist.org/packages/mroosz/php-cassandra
 
 ## Features
-* Using Protocol v5 (Cassandra 4.x)
+* Using Protocol v5 (Cassandra 4.x, 5.x)
 * Supports ssl/tls with stream transport layer
 * Supports asynchronous and synchronous requests
 * Support for logged, unlogged and counter batches

TODO.md

@@ -6,3 +6,4 @@ Todo
 * Remove uneeded bin -> int -> bin conversions
 * Add fromValue() and fromMixedValue()
 * Move bin conversions to a single place
+* Add documentation