Merge pull request #1421 from pauloleitemoreira/master

Change deprecated kind(String) method to setKind(String) in README.MD

Author: lesv

google-cloud-datastore/README.md

@@ -90,7 +90,7 @@ import com.google.cloud.datastore.KeyFactory;
 Then add the following code to put an entity in Datastore.
 
 ```java
-KeyFactory keyFactory = datastore.newKeyFactory().kind("Person");
+KeyFactory keyFactory = datastore.newKeyFactory().setKind("Person");
 Key key = keyFactory.newKey("john.doe@gmail.com");
 Entity entity = Entity.newBuilder(key)
     .set("name", "John Doe")