Updated readme and examples

examples/commands.php

@@ -17,7 +17,7 @@ $commands->on('command', function ($command, $args, $shell) {
     $shell->write("Arguments passed: ".json_encode($args)."\n");
 });
 
-$shell->on('prompt', function ($shell) { 
-    $shell->setPrompt(date(">> ")); 
+$shell->on('prompt', function ($shell) {
+    $shell->setPrompt(">> ");
 });
 $shell->on('input', $commands);