Update README and version

Author: natanfelles

README.md

@@ -8,14 +8,16 @@ Fine tuning on the PHP Built-in web server
 
 ![PHP Built-in web server autoindex](https://i.imgur.com/dE7B2LJ.png)
 
+> See release notes at: https://github.com/natanfelles/php-server/releases
+
 ## Installation
 
 ### Composer
 
 Open your terminal and run:
 
 ```sh
-composer global require natanfelles/php-server 2.*
+composer global require natanfelles/php-server:dev-master
 ```
 
 Add the composer bin path to your *.bashrc*:

src/server_config.php

@@ -19,7 +19,7 @@
 	   'max_execution_time'     => 360,
    ],
    'server'          => [
-	   'PHPSERVER_VERSION' => '2.8',
+	   'PHPSERVER_VERSION' => '2.9',
    ],
 ];