Fix storybook and update readme

[jamespaulmuir]

Making sure yarn.lock has correct versions for storybook to able to build components and update README to include dev steps to run storybook.

[georgialoper]

I ended up needing to run yarn add vue-loader@next -D (following this SO answer) to get storybook to compile without the pictured errors even after pulling this updated yarn.lock file. I removed vue-loader from package.json and tried to reinstall it, but didn't get anything in my git diff. I have no idea what's up with that, but thought I'd document this in case anyone else experiences issues running storybook. Thanks for updating these!

[georgialoper]

@jamespaulmuir just pushed this commit based on suggestions in this storybook issue that seems to have solved my issue running yarn run storybook outlined above and allows me to run yarn run build-storybook successfully as well. Seems like transitive dependencies of storybook were using vue 2 versions of vue-loader, this forces them to use the vue3 version.