Update README.md

Author: brinesoftwares

Diff for: README.md

@@ -4,7 +4,16 @@ Mobile app for solving 3*3 Rubik's Cube.
 
 ## Screenshot
 
- <p align="left">
+ <p align="center">
   <img src="https://github.com/brinesoftwares/Flutter-AI-Rubik-cube-Solver/blob/master/screenshots/ss2.jpg?raw=true" width="300" >
   <img src="https://github.com/brinesoftwares/Flutter-AI-Rubik-cube-Solver/blob/master/screenshots/ss1.jpg?raw=true" width="300" >
 </p>
+
+## Python Libraries
+
+  - Flask (https://pypi.org/project/Flask/)
+  - Numpy (https://pypi.org/project/numpy/)
+  - Rubik Solver (https://pypi.org/project/rubik-solver/)
+  - Rubiks Cube Tracker (https://github.com/dwalton76/rubiks-cube-tracker)
+  - OpenCV (https://pypi.org/project/opencv-python/)
+