FIX #64 add userData subscription

app/src/main/java/chat/rocket/android/service/RocketChatWebSocketThread.java

@@ -15,6 +15,7 @@ import chat.rocket.android.realm_helper.RealmHelper;
 import chat.rocket.android.realm_helper.RealmStore;
 import chat.rocket.android.service.ddp.ActiveUsersSubscriber;
 import chat.rocket.android.service.ddp.LoginServiceConfigurationSubscriber;
+import chat.rocket.android.service.ddp.UserDataSubscriber;
 import chat.rocket.android.service.observer.GetUsersOfRoomsProcedureObserver;
 import chat.rocket.android.service.observer.LoadMessageProcedureObserver;
 import chat.rocket.android.service.observer.MethodCallObserver;
@@ -36,6 +37,7 @@ public class RocketChatWebSocketThread extends HandlerThread {
   private static final Class[] REGISTERABLE_CLASSES = {
       LoginServiceConfigurationSubscriber.class,
       ActiveUsersSubscriber.class,
+      UserDataSubscriber.class,
       TokenLoginObserver.class,
       MethodCallObserver.class,
       SessionObserver.class,

app/src/main/java/chat/rocket/android/service/ddp/UserDataSubscriber.java

+package chat.rocket.android.service.ddp;
+
+import android.content.Context;
+import chat.rocket.android.api.DDPClientWraper;
+import chat.rocket.android.model.ddp.User;
+import chat.rocket.android.realm_helper.RealmHelper;
+import io.realm.RealmObject;
+
+/**
+ * "userData" subscriber.
+ */
+public class UserDataSubscriber extends AbstractDDPDocEventSubscriber {
+  public UserDataSubscriber(Context context, RealmHelper realmHelper,
+      DDPClientWraper ddpClient) {
+    super(context, realmHelper, ddpClient);
+  }
+
+  @Override protected String getSubscriptionName() {
+    return "userData";
+  }
+
+  @Override protected String getSubscriptionCallbackName() {
+    return "users";
+  }
+
+  @Override protected Class<? extends RealmObject> getModelClass() {
+    return User.class;
+  }
+}