Docs fix

Author: chrisbarr

README.md

@@ -63,7 +63,7 @@ Available methods:
 * `unsubscribe($subscriptionArn)`
 * `createPlatformEndpoint($platformApplicationArn, $token, $userData)`
 * `deleteEndpoint($deviceArn)`
-* `pushToEndpoint($deviceArn,$message)`
+* `publishToEndpoint($deviceArn,$message)`
 
 To set the API region (us-east-1, us-west-2, us-west-1, eu-west-1, etc):