Add setup instructions to README

Added setup instructions for Python virtual environment.

README.md

@@ -5,62 +5,10 @@ opencv2
 pillow
 numpy
 
+## setup (python venv)
+python3 -m venv .venv
+source .venv/bin/activate
+pip install -r requirements.txt
+
 ## run
 python src/Main.py
-
-## menu items
-* file
-    - new
-    - open
-    - save
-    - save as
-    - properties
-    - quit
-
-* clipboard
-    - copy
-    - paste
-    - cut
-
-* image
-    - Select --> rectangular selection
-    - free-form selection (Lasso)
-    - Polygon selection; Crop
-    - Resize
-    - Rotate --> rotate right 90 degrees
-    - Rotate Left 90 degrees
-    - Flip vertical
-    - Flip horizontal;
-
-* tools
-    - Zoom (Zoom In - Zoom Out)
-    - Erase
-    - Color Picker
-    - Paint brushes (with different textures/patterns)
-    - Text box
-    - Filters --> Gaussian filter
-    - Sobel filter
-    - Binary filter; Histogram thresholding
-
-* shapes
-    - List of Shapes
-    - Outline color
-    - Fill color
-
-* colors
-    - Colors menu with the following options: Color pallet
-    - Size of brush
-
-* layer
-    - New Layer
-    - Load layer
-    - Edit layer
-    - Select layer
-    - Delete layer
-    - Rename layer
-
-* filters
-    - (locate face and add features)
-
-
-