README.md in ruby_universign-1.2.0 vs README.md in ruby_universign-1.2.1

@@ -81,9 +81,36 @@
 transaction = Universign::Transaction.new('9696179e-a43d-4803-beeb-9e5c02fd159b')
 # was the transaction signed by the user ?
 transaction.signed?
 ```
 
+The gem also supports the updated way of creating multiple signature fields per document:
+
+```ruby
+doc_1 = Universign::Document.new(
+  name:    'one.pdf',
+  content: File.open('spec/fixtures/universign-guide-8.8.pdf').read,
+  signature_fields: [
+    Universign::SignatureField.new(coordinate: [20, 20], page: 1, signer_index: 0),
+    Universign::SignatureField.new(coordinate: [80, 20], page: 1, signer_index: 0)
+  ]
+)
+
+doc_2 = Universign::Document.new(
+  name:    'two.pdf',
+  content: File.open('spec/fixtures/universign-guide-8.8.pdf').read,
+  signature_fields: [
+    Universign::SignatureField.new(coordinate: [100, 120], page: 4, signer_index: 0),
+  ]
+)
+
+transaction = Universign::Transaction.create(
+  documents: [doc_1, doc_2],
+  signers:   [signer],
+  options:   { profile: 'default', final_doc_sent: true }
+)
+```
+
 ### `Universign::Document`
 
 It can be created with either your file's content or your file's url.
 
 ### `Universign::SignatureField`