Add support for <style> and the Stylus lang

[danielbastos11]

Fixes #38

[eddyerburgh]

Thanks for the PR 👍

Stylus needs to be added as a devDependency, and could you add some tests for a plain style block, without stylus

[danielbastos11]

Thanks for the feedback!
I pushed the changes as you requested.
Please let me know if there's anything else.

[eddyerburgh]

Thanks 🙂

[LinusBorg]

Great Work!

[danielbastos11]

@LinusBorg Thanks! :)

[LinusBorg]

we should only convert style partss that acually have a "module" attribute, right?

Otherwise we would create a $styles object on a component that onnly has "normal" styles like <style lang="scss">.

[LinusBorg]

Instead of adding it to the render function, I think we should create a beforeCreate() callback that adds the property during intialization of the component.

That's essentially what vue-loader does, it would look something like this:

output += '\n;(function() {' +
      '\nvar existing = __vue__options__.beforeCreate' +
      '\nvar styleFn =  function () { ' + styleStr + ' })' +
      '\n__vue__options__.beforeCreate = existing ? [].concat(existing, styleFn) : [styleFn]' +
      '})()'

This would ensure that the style is also available before render, e.g. to be accessed from within some method or a created() hook.

[danielbastos11]

Well, I think since neither one of those are use cases I'm currently in need of, I just didn't remember them...
I'll try to update the PR later today to account for these modifications.

Thanks for the review 👍