Update CHANGELOG.md and README.md

Author: Илья

CHANGELOG.md

@@ -1,3 +1,4 @@
+* added ReadFromTextFileCredentials
 * added lambda on exception in retryTransaction
 
 ## 1.10.0

README.md

@@ -417,6 +417,36 @@ The following algorithm that is the same for YDB-PHP-SDK applies:
 4. Otherwise, if the value of the `YDB_ACCESS_TOKEN_CREDENTIALS` environment variable is set, the **Access token** authentication mode is used, where the this variable value is passed.
 5. Otherwise, the **Metadata** authentication mode is used.
 
+## Reading from text file
+
+```php
+<?php
+
+use YdbPlatform\Ydb\Ydb;
+use YdbPlatform\Ydb\Auth\ReadFromTextFileCredentials;
+
+$config = [
+
+    // Database path
+    'database'    => '/local',
+
+    // Database endpoint
+    'endpoint'    => 'localhost:2136',
+
+    // Auto discovery (dedicated server only)
+    'discovery'   => false,
+
+    // IAM config
+    'iam_config'  => [
+        'insecure' => true,
+    ],
+    
+    'credentials' => new ReadFromTextFileCredentials($tokenPath, $refreshTime)
+];
+
+$ydb = new Ydb($config);
+```
+
 # Usage
 
 You should initialize a session from the Table service to start querying with retry.

src/Auth/ReadFromTextCredentials.php

@@ -2,7 +2,7 @@
 
 namespace YdbPlatform\Ydb\Auth;
 
-class ReadFromTextCredentials extends Auth
+class ReadFromTextFileCredentials extends Auth
 {
 
     protected $fileName;

tests/CheckReadTokenFileTest.php

@@ -19,7 +19,7 @@ public function testReadTokenFile(){
             // Auto discovery (dedicated server only)
             'discovery'   => false,
 
-            'credentials'  => new ReadFromTextCredentials("./tests/token.txt")
+            'credentials'  => new ReadFromTextFileCredentials("./tests/token.txt")
         ];
 
         $ydb = new Ydb($config);