Added a requirements.txt file and modified README.md

README.md

@@ -32,9 +32,9 @@ and activate the virtual environment
 ```bash
 % source env/bin/activate
 ```
-Then install the necessary packages
+Then install the necessary packages by
 ```bash
-(env) % pip install numpy matplotlib scipy sklearn jupyterlab
+(env) % pip install -r requirements.txt
 ```
 Now, start [Jupyter Lab](https://jupyterlab.readthedocs.io/) or [Jupyter Notebook](https://jupyter-notebook.readthedocs.io/) if you prefer by
 ```bash

requirements.txt

+numpy
+matplotlib
+scipy
+sklearn
+jupyterlab
\ No newline at end of file