Docs - new default setting for createSession()

Author: jeffswartz

README.md

@@ -183,7 +183,7 @@ List<Archive> archives = opentok.listArchives(50, 50);
 
 # Samples
 
-There are two sample applications included in this repository. To get going as fast as possible, clone the whole
+There are two sample applications included with the SDK. To get going as fast as possible, clone the whole
 repository and follow the Walkthroughs:
 
 *  [HelloWorld](sample/HelloWorld/README.md)
@@ -207,7 +207,7 @@ This project is tested on both OpenJDK and Oracle implementations.
 See the [Releases](https://github.com/opentok/opentok-java-sdk/releases) page for details
 about each release.
 
-# Important changes in v2.2
+# Important changes in v2.2.1
 
 This version of the SDK includes support for working with OpenTok 2.0 archives. (This API does not
 work with OpenTok 1.0 archives.)
@@ -220,6 +220,12 @@ The API_Config class has been removed. Store your OpenTok API key and API secret
 The `create_session()` method has been renamed `createSession()`. Also, the method has changed to
 take one parameter: a SessionProperties object. You now generate a SessionProperties object using a Builder pattern.
 
+The default setting for the `createSession()` method is to create a session with the media mode set
+to relayed. In previous versions of the SDK, the default setting was to use the OpenTok Media Router
+(media mode set to routed). In a relayed session, clients will attempt to send streams directly between
+each other (peer-to-peer); if clients cannot connect due to firewall restrictions, the session uses the
+OpenTok TURN server to relay audio-video streams.
+
 The `generate_token()` method has been renamed `generateToken()`. Also, the method has changed to
 take two parameters: the session ID and a TokenOptions object.