Update README

add example code for passing a CustomJsonConfig class into thte AccountApi constructor.

Author: SidneyAllen

README.md

@@ -74,7 +74,7 @@ Add the dependency to your pom.xml.  Gradle, sbt and other build tools can be fo
     <dependency>
       <groupId>com.github.xeroapi</groupId>
       <artifactId>xero-java</artifactId>
-      <version>2.2.2</version>
+      <version>2.2.3</version>
 	</dependency>
 
 
@@ -156,6 +156,21 @@ You have the option to implement your own Config class and pass it as an argumen
 
 An example of how you might implement Config can be found in the `/src/main/java/com/xero/example` folder named `CustomJsonConfig.java`.
 
+```java
+try {
+	config = new CustomJsonConfig();
+	System.out.println("Your user agent is: " + config.getUserAgent());			
+} catch(Exception e) {
+	System.out.println(e.getMessage());
+}
+
+ApiClient apiClientForAccounting = new ApiClient(config.getApiUrl(),null,null,null);
+
+AccountingApi accountingApi = new AccountingApi(config);
+accountingApi.setApiClient(apiClientForAccounting);
+accountingApi.setOAuthToken(token, tokenSecret);
+```
+
 ### Spring Framework based Configuration
 
 An alternative method of configuring the Xero Java SDK can be found in the `example-spring/src/main/java` folder named `SpringConfig.java`.

src/main/java/com/xero/api/JsonConfig.java

@@ -132,7 +132,7 @@ public String getAccessTokenUrl() {
 
   @Override
   public String getUserAgent() {
-    return USER_AGENT + " " + CONSUMER_KEY + " [Xero-Java-2.2.2]";
+    return USER_AGENT + " " + CONSUMER_KEY + " [Xero-Java-2.2.3]";
   }
 
   @Override