update the readme

Add detail to and basic usage.

Author: mianzaid

README.md

@@ -6,7 +6,9 @@ A PHP base class that you can use to upload any file into the server. It is a ve
 
 Composer installation:
 
-`composer require learncodeweb/upload-files-with-image-thumb-and-resizer`
+```composer
+composer require learncodeweb/upload-files-with-image-thumb-and-resizer
+```
 
 ----
 
@@ -23,3 +25,46 @@ A PHP base class that you can use to upload any file into the server. It is a ve
 9) Customizable Thumbnails Sizes And Dimensions.
 10) Files Extension Filters.
 11) File Size Limit for Uploading.
+
+----
+
+How to use after installation:
+
+```php
+require('../multi-files-upload-and-image-resizer.php');
+$rename    =    rand(1000, 5000) . time(); // left empty if you want the real file name
+$upload    =    new anyFileUpload\ImageUploadAndResize('array', ['jpeg', 'jpg', 'png'], '../uploads', 0655);
+$upload->uploadFiles('files', 250, '', $rename, 100, '850', ['350','450']);
+```
+
+/* For watermark you will use array and able to add image as a watermark or text. */
+
+**With text below will be the parameters:**
+```php
+[
+    'value' => "HI I AM ZAID",
+    'font-size' => 50,
+    'font-family' => "../fonts/Myriad-Pro-Regular.ttf",
+    'font-color' => '#0a103e',
+    'position-x' => 400,
+    'position-y' => 100
+];
+```
+
+**With image below will be the parameters:**
+```php
+[
+    'value' => "your-image-complete-path",
+    'position-x' => 400,
+    'position-y' => 100
+];
+```
+
+**And the response will be get like below:**
+In the below response you will get the uploaded/not uploaded/bad extensions and success/error flags array or json data.
+
+```php
+print "<pre>";
+print_r($upload->uploadedData);
+print "</pre>";
+```