Reorganize into Demos folder

.gitignore

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+/venv/
+/shelf/

Demos/pyserialtransfer.py

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+import os
+import time
+
+from pySerialTransfer import pySerialTransfer as txfer
+
+try:
+    # ---
+    # You will need to customize port to your own computer; to find your port:
+    # With your Arduino plugged in, open Arduino IDE, and click "Select Board". Then, you can see the port.
+    # On Linux, it will be "/dev/ttyXXX#", like "/dev/ttyACM0" or "/dev/ttyUSB0". I think macOS is the same.
+    # On Windows, it will be "COM#", like "COM3"
+    # ---
+    port = '/dev/ttyACM0'
+    link = txfer.SerialTransfer(port, 115200, timeout=.1)
+
+    link.open()
+    time.sleep(2)
+    temp = 0
+
+    while True:
+        time.sleep(1)
+        ################################################################################################################
+        # How to send data to the Arduino
+        ################################################################################################################
+
+        # send_size will be increased when data is added to payload
+        send_size = 0
+
+        # Adds data to payload
+        temp += 1
+        int_size = link.tx_obj(temp, send_size) - send_size
+        send_size += int_size
+
+        # Sends data to Arduino
+        link.send(send_size)
+
+        # Waits for response from Arduino, and reports errors while receiving packets
+        while not link.available():
+            if link.status < 0:
+                if link.status == txfer.CRC_ERROR:
+                    print('Error: CRC_ERROR')
+                elif link.status == txfer.PAYLOAD_ERROR:
+                    print('Error: PAYLOAD_ERROR')
+                elif link.status == txfer.STOP_BYTE_ERROR:
+                    print('Error: STOP_BYTE_ERROR')
+                else:
+                    print('Error: {}'.format(link.status))
+
+        # Parse response from Arduino
+        rec_int = link.rx_obj(obj_type=int, obj_byte_size=int_size, start_pos=(send_size - int_size))
+
+        # Print sent and received data
+        print('Send:', temp, 'Received:', rec_int)
+
+except KeyboardInterrupt:
+    try:
+        link.close()
+    except:
+        pass
+
+except:
+    import traceback
+
+    traceback.print_exc()
+
+    try:
+        link.close()
+    except:
+        pass