Update Readme.md

README.md

 # serialGUI
 
-**serialGUI** is a python user interface developed to interact with a serial port. It allows to send and receive text or bytes threw the serial port.
+**serialGUI** is a python user interface developed to interact with a serial port. It allows to send and receive text or bytes through the serial port.
 
 ## Description
 
@@ -15,6 +15,6 @@ pip install pyqt5 pyserial
 ## Dependencies
 
 - **pyserial** : required for serial communication
-- **PyQt5** :
+- **PyQt5** : required for GUI
 
 ## Usage Example