Simplified contributing example, clarified personalization default

Author: thinkingserious

CONTRIBUTING.md

@@ -94,14 +94,15 @@ See the [examples folder](https://github.com/sendgrid/sendgrid-java/tree/master/
 Check out the documentation for [Web API v3 endpoints](https://sendgrid.com/docs/API_Reference/Web_API_v3/index.html).
 
 ```bash
+./gradlew build
 cd examples
 touch Example.java
 ```
 
 Add the example you want to test to Example.java, including the headers at the top of the file.
 
 ``` bash
-javac -classpath ./dependencies/jackson-annotations-2.7.0.jar:./dependencies/jackson-databind-2.7.3.jar:./dependencies/jackson-core-2.7.3.jar:../build/libs/sendgrid-3.0.0-jar.jar:. Example.java && java -classpath ./dependencies/jackson-annotations-2.7.0.jar:./dependencies/jackson-databind-2.7.3.jar:./dependencies/jackson-core-2.7.3.jar:../build/libs/sendgrid-3.0.0-jar.jar:. Example
+javac -classpath ../repo/com/sendgrid/3.0.0/sendgrid-3.0.0-jar.jar:. Example.java && java -classpath ../repo/com/sendgrid/3.0.0/sendgrid-3.0.0-jar.jar:. Example
 ```
 
 <a name="understanding_the_codebase"></a>

examples/helpers/mail/Example.java

@@ -213,6 +213,9 @@ public static Mail buildHelloEmail() throws IOException {
     String subject = "Hello World from the SendGrid Java Library";
     Email to = new Email("[email protected]");
     Content content = new Content("text/plain", "some text here");
+    // Note that when you use this constructor an initial personalization object
+    // is created for you. It can be accessed via
+    // mail.personalization.get(0) as it is a List object
     Mail mail = new Mail(from, subject, to, content);
     Email email = new Email("[email protected]");
     mail.personalization.get(0).addTo(email);
@@ -229,11 +232,11 @@ public static void baselineExample() throws IOException {
     try {
       request.method = Method.POST;
       request.endpoint = "mail/send";
-      request.requestBody = helloWorld.build();
+      request.body = helloWorld.build();
       Response response = sg.api(request);
       System.out.println(response.statusCode);
-      System.out.println(response.responseBody);
-      System.out.println(response.responseHeaders);
+      System.out.println(response.body);
+      System.out.println(response.headers);
     } catch (IOException ex) {
       throw ex;
     }
@@ -248,11 +251,11 @@ public static void kitchenSinkExample() throws IOException {
     try {
       request.method = Method.POST;
       request.endpoint = "mail/send";
-      request.requestBody = kitchenSink.build();
+      request.body = kitchenSink.build();
       Response response = sg.api(request);
       System.out.println(response.statusCode);
-      System.out.println(response.responseBody);
-      System.out.println(response.responseHeaders);
+      System.out.println(response.body);
+      System.out.println(response.headers);
     } catch (IOException ex) {
       throw ex;
     }