feature suggestion, add create .gitignore dynamically

this is the code that i type for make it dynamically:

#!/bin/bash

GITIGNORE_FILE=".gitignore"

if [ -f "$GITIGNORE_FILE" ]; then
    rm "$GITIGNORE_FILE"
fi

touch "$GITIGNORE_FILE"

for dir in */; do
    echo "$dir" >> "$GITIGNORE_FILE"
done

echo ".DS_Store" >> "$GITIGNORE_FILE"

echo ".gitignore already created."
