added json examples (#792)

Author: sbansla

examples/Content.md

@@ -0,0 +1,25 @@
+public class ContentExamples {
+    public static void main {
+        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
+        createTwilioText();
+    }
+    
+    public static void createTwilioText() {
+        Content.ContentCreateRequest createRequest = new Content.ContentCreateRequest("es", types);
+
+        Content.TwilioText twilioText = new Content.TwilioText();
+        twilioText.setBody("text body");
+
+        Content.Types types = new Content.Types();
+        types.setTwilioText(twilioText);
+
+        Map<String, String> variables = new HashMap<>();
+        variables.put("var1", "val1");
+
+        createRequest.setVariables(variables);
+        createRequest.setFriendlyName("name");
+
+        Content newContent = Content.creator(createRequest).create();
+    }
+
+}

examples/PreviewMessaging.md

@@ -0,0 +1,28 @@
+class PreviewMessagingExamples {
+    public static void main {
+        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
+        sendBulkMessages();
+    }
+
+    private static void sendBulkMessages() {
+        Message.CreateMessagesRequest createMessagesRequest = new Message.CreateMessagesRequest();
+        List<String> toNumbers; // recipients numbers
+        
+        // Set from number
+        PhoneNumber fromNumber;
+        
+        // Set list of number where you want to send bulk message.
+        List<Message.MessagingV1Message> phoneList = new ArrayList<>();
+        for (String to: toNumbers) {
+            Message.MessagingV1Message phone = new Message.MessagingV1Message();
+            phone.setTo(new PhoneNumber(to));
+            phoneList.add(phone);
+        }
+        
+        createMessagesRequest.setFrom(fromNumber);
+        createMessagesRequest.setBody("Bulk message to send");
+        createMessagesRequest.setMessages(phoneList);
+        Message message = Message.creator(createMessagesRequest).create();
+    }
+
+}