Update README.md with JSONEncryptionTransformer

README.md

@@ -54,6 +54,34 @@ class User {
 
 ```
 
+For JSON fields you can use `JSONEncryptionTransformer`.
+
+
+```typescript
+import { Entity, Column } from "typeorm";
+import { EncryptionTransformer } from "typeorm-encrypted";
+
+@Entity()
+class User {
+  ...
+
+  @Column({
+    type: "json",
+    nullable: false,
+    transformer: new JSONEncryptionTransformer({
+      key: 'e41c966f21f9e1577802463f8924e6a3fe3e9751f201304213b2f845d8841d61',
+      algorithm: 'aes-256-cbc',
+      ivLength: 16,
+      iv: 'ff5ac19190424b1d88f9419ef949ae56'
+    })
+  })
+  secret: object;
+
+  ...
+}
+
+```
+
 More information about transformers is available in the [typeorm docs](https://typeorm.io/#/entities/column-options).
 
 ### Subscribers