Stitch images using ImageMagick

./stitch.sh --image1 "custom1.png" --caption1 "Custom Before"

./stitch.sh --image2 "custom2.png" --caption2 "Custom After"

./stitch.sh --image1 "custom1.png" --caption1 "Custom Before" --image2 "custom2.png" --caption2 "Custom After"

./stitch.sh