Added BTSerial Code

BTSerial/BTSerial.ino

@@ -0,0 +1,19 @@
+#include <SoftwareSerial.h>
+
+SoftwareSerial BTSerial(10, 11); // RX | TX
+
+void setup()
+{
+  Serial.begin(38400);
+  Serial.println("Enter AT commands:");
+  BTSerial.begin(38400);
+}
+
+void loop()
+{
+  if (BTSerial.available())
+    Serial.write(BTSerial.read());
+
+  if (Serial.available())
+    BTSerial.write(Serial.read());
+}