Add source and examples

examples/BlynkClient/BlynkClient.ino

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+/**************************************************************
+ *
+ * For this example, you need to install Blynk library:
+ *   https://github.com/blynkkk/blynk-library/releases/latest
+ *
+ * TinyGSM Getting Started guide:
+ *   http://tiny.cc/tiny-gsm-readme
+ *
+ **************************************************************
+ *
+ * Blynk is a platform with iOS and Android apps to control
+ * Arduino, Raspberry Pi and the likes over the Internet.
+ * You can easily build graphic interfaces for all your
+ * projects by simply dragging and dropping widgets.
+ *
+ * Blynk supports many development boards with WiFi, Ethernet,
+ * GSM, Bluetooth, BLE, USB/Serial connection methods.
+ * See more in Blynk library examples and community forum.
+ *
+ *                http://www.blynk.io/
+ *
+ * Change GPRS apm, user, pass, and Blynk auth token to run :)
+ **************************************************************/
+
+#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
+
+// Default heartbeat interval for GSM is 60
+// If you want override this value, uncomment and set this option:
+//#define BLYNK_HEARTBEAT 30
+
+#include <TinyGsmClient.h>
+#include <BlynkSimpleSIM800.h>
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "YourAuthToken";
+
+// Your GPRS credentials
+// Leave empty, if missing user or pass
+char apn[]  = "YourAPN";
+char user[] = "";
+char pass[] = "";
+
+// Hardware Serial on Mega, Leonardo, Micro
+#define GsmSerial Serial1
+
+// or Software Serial on Uno, Nano
+//#include <SoftwareSerial.h>
+//SoftwareSerial GsmSerial(2, 3); // RX, TX
+
+TinyGsmClient gsm(GsmSerial);
+
+void setup()
+{
+  // Set console baud rate
+  Serial.begin(115200);
+  delay(10);
+
+  // Set GSM module baud rate
+  GsmSerial.begin(115200);
+  delay(3000);
+
+  // Restart takes quite some time
+  // You can skip it in many cases
+  Serial.println("Restarting modem...");
+  gsm.restart();
+
+  Blynk.begin(auth, gsm, apn, user, pass);
+}
+
+void loop()
+{
+  Blynk.run();
+}
+