echo -n "Enter old version: "
read old_version
echo -n "Enter new version: "
read new_version
old_version=$(echo $old_version | sed -e "s/\./\\\./g")
for i in examples/* README.md; do
sed -e "s/$old_version/$new_version/g" < $i > $i.new
mv $i.new $i
done