Update README.

README.md

@@ -6,7 +6,7 @@
 EPP ([Extensible Provisioning Protocol](https://tools.ietf.org/html/rfc5730)) client for
 [Go](https://golang.org/). Extracted from and in production use at [Domainr](https://domainr.com/).
 
-**Note:** This library is currently under development, and its interface is subject to breaking changes at any time.
+**Note:** This library is currently under development. Its API is subject to breaking changes at any time.
 
 ## Installation
 
@@ -30,11 +30,11 @@ if err != nil {
 	return err
 }
 
-dc, err := conn.CheckDomain("google.com")
+dcr, err := conn.CheckDomain("google.com")
 if err != nil {
 	return err
 }
-for _, r := range dc.Results {
+for _, r := range dcr.Checks {
 	// ...
 }
 ```