README.md in docproof-0.1.1 vs README.md in docproof-0.1.2

@@ -28,13 +28,28 @@
 and requires `coinbase/wallet`
 
 ```ruby
 require 'coinbase/wallet`
 
-docproof_document = Docproof::Document.new('y0urd0cum3nt5ha256h45h') 
+docproof_document = Docproof::Document.new('y0urd0cum3nt5ha256h45h')
+docproof_document.register! && docproof_document.notarize!
 ```
 
+You can also configure the Coinbase API Key and Secret like so:
+
+```ruby
+require 'coinbase/wallet`
+
+Docproof::PaymentProcessor::Coinbase.configure do |config|
+  config.api_key    = 'YOUR-COINBASE-API-KEY'
+  config.api_secret = 'YOUR-COINBASE-API-SECRET'
+end
+
+docproof_document = Docproof::Document.new('y0urd0cum3nt5ha256h45h')
+docproof_document.register! && docproof_document.notarize!
+```
+
 ## Usage
 
 To register a new document's SHA256 digest:
 
 ```ruby
@@ -57,6 +72,6 @@
 
 The JSON response is stored in `Docproof::Document#response` and keys with the value of empty string are ignored.
 
 ### Errors
 
-If the request is not successful, the gem will raise an error. All errors are subclasses of `Docproof::Document::Errors`.
+If the request is not successful, the gem will raise an error. All errors are subclasses of `Docproof::Error`.