Improve documentation

Author: johnkrovitch

README.md

@@ -1,7 +1,7 @@
 Sidus/EncryptionBundle
 ====================
 
-Easy entity and file encryption for Symfony2.
+Easy entity and file encryption for Symfony.
 
 We wanted to be able to store encrypted data in our Symfony2 applications and we realized that there were no simple way
 to do it.
@@ -20,6 +20,35 @@ The main weakness of this system is that the cipher key is stored temporarly in
 overcome this problem would be to use a pretty complex asymmetric encryption system between the client and the server
 which could only be done properly using a rich client.
 
+Installation
+------------
+```shell
+composer require cleverage/encryption-bundle
+```
+
+
+Usage
+-----
+
+```php
+
+use Doctrine\ORM\Mapping as ORM;class MyEntity {
+    
+    /**
+     * @ORM\Column(type="encrypt_string") 
+     */
+    private string $myField;
+    
+    /**
+     * @ORM\Column(type="encrypt_text") 
+     */
+    private string $myFieldText;
+}
+
+```
+
+
+
 Helpers
 -------
 This bundle comes with an EncryptionManager class which can be used in standalone to encrypt and decrypt data and files.