Fix minor issue and update the Realtime database simple examples

examples/RealtimeDatabase/Simple/SimpleDatabaseSecret/SimpleDatabaseSecret.ino

@@ -2,6 +2,8 @@
  * This example is for new users which are familiar with other legacy Firebase libraries.
  *
  * The example shows how to set, push and get the values to/from Realtime database.
+ * 
+ * All functions used in this example are blocking (sync) functions.
  *
  * This example will not use any authentication method included database secret.
  *
@@ -79,14 +81,9 @@ void setup()
  // Set your database URL
  Database.url(DATABASE_URL);
 
- // Set the operating result for the the following blocking (sync) functions.
- // The result will keep in the async result object we set to the client.
+ // In sync functions, we have to set the operating result for the client that works with the function.
  client.setAsyncResult(result);
 
- // The following are blocking operations which the result will store in the result object we set above.
-
- // In the another Stream examples, we will use the non-blocking (async) functions to allow the realtime incoming data. 
-
  // Set, push and get integer value
 
  Serial.print("Set int... ");

examples/RealtimeDatabase/Simple/SimpleNoAuth/SimpleNoAuth.ino

@@ -3,6 +3,8 @@
  *
  * The example shows how to set, push and get the values to/from Realtime database.
  *
+ * All functions used in this example are blocking (sync) functions.
+ *
  * This example will use the database secret for priviledge Realtime database access which does not need
  * to change the security rules or it can access Realtime database no matter what the security rules are set.
  *
@@ -86,14 +88,9 @@ void setup()
  // Set your database URL
  Database.url(DATABASE_URL);
 
- // Set the operating result for the the following blocking (sync) functions.
- // The result will keep in the async result object we set to the client.
+ // In sync functions, we have to set the operating result for the client that works with the function.
  client.setAsyncResult(result);
 
- // The following are blocking operations which the result will store in the result object we set above.
-
- // In the another Stream examples, we will use the non-blocking (async) functions to allow the realtime incoming data.
-
  // Set, push and get integer value
 
  Serial.print("Set int... ");
@@ -249,7 +246,7 @@ void setup()
 
 void loop()
 {
- // We don't need to poll the async task using Database.loop(); as in the Stream examples because 
+ // We don't need to poll the async task using Database.loop(); as in the Stream examples because
  // only blocking (sync) functions were used in this example.
 
  // We don't have to poll authentication handler task using app.loop() as seen in other examples

examples/RealtimeDatabase/Simple/StreamDatabaseSecret/StreamDatabaseSecret.ino

@@ -3,6 +3,8 @@
  *
  * The example shows how to listen the data changes in your Firebase Realtime database
  * while the database was set periodically.
+ * 
+ * All functions used in this example are non-blocking (async) functions.
  *
  * This example will use the database secret for priviledge Realtime database access which does not need
  * to change the security rules or it can access Realtime database no matter what the security rules are set.
@@ -132,7 +134,7 @@ void setup()
 
  // Initiate the Stream connection to listen the data changes.
  // This function can be called once.
- // The Stream was connected using async get function (non-blocking) which the result was assign to the function.
+ // The Stream was connected using async get function (non-blocking) which the result will assign to the function in this case.
  Database.get(client1, "/test/stream", result1, true /* this option is for Stream connection */);
 }
 

examples/RealtimeDatabase/Simple/StreamNoAuth/StreamNoAuth.ino

@@ -3,6 +3,8 @@
  *
  * The example shows how to listen the data changes in your Firebase Realtime database
  * while the database was set periodically.
+ * 
+ * All functions used in this example are non-blocking (async) functions.
  *
  * This example will not use any authentication method included database secret.
  *
@@ -142,7 +144,7 @@ void setup()
 
  // Initiate the Stream connection to listen the data changes.
  // This function can be called once.
- // The Stream was connected using async get function (non-blocking) which the result was assign to the function.
+ // The Stream was connected using async get function (non-blocking) which the result will assign to the function in this case.
  Database.get(client1, "/test/stream", result1, true /* this option is for Stream connection */);
 }