Changing description

Author: khanamiryan

README.md

@@ -1,11 +1,26 @@
-# php-qrcode-detector-decoder
-Php library to detect and decode QR-codes
+# QR code decoder for PHP
+This is a PHP library to detect and decode QR-codes.
+Ported from [ZXing library](https://github.com/zxing/zxing) 
 
+## Usage 
+```php
+include_once('./lib/QrReader.php');
+$qrcode = new QrReader('path/to_image');
+$text = $qrcode->text(); //return decoded text from QR Code
+```
 
-Ported from ZXing library
+## Requirements 
+* PHP >= 5.3
+* GD Library
 
-How to use:
---------------
-    include_once('./lib/QrReader.php');
-    $qrcode = new QrReader('path/to_image');
-    print $text = $qrcode->text();
+
+## Contributing
+
+You can help the project by adding features, cleaning the code, adding composer and other.
+
+ 
+1. Fork it
+2. Create your feature branch: `git checkout -b my-new-feature`
+3. Commit your changes: `git commit -am 'Add some feature'`
+4. Push to the branch: `git push origin my-new-feature`
+5. Submit a pull request