make page_size configurable

[whysthatso]

Thanks for this gem of a gem, it makes using prawn so much more reasonable.

is there a way to add page_size as a configurable?

as it is in the initialize function, i'm not sure how to override or configure it best. if you could give me some hints, i might be able to come up with a pr.

[excid3]

We probably need to change this

    def initialize(attributes = {})
      super(page_size: "LETTER")

To:

super(page_size: attributes.delete(:page_size) || "LETTER")

[whysthatso]

haha, you're too reactive. i had hoped to twiddle together a nice naive pr :D
thanks.

[excid3]

It turns out that I already had this code on my laptop sitting in git staging from like a month ago and I just had to commit it. 😅

[excid3]

I'm sure there are lots of other improvements to be done, so PRs are welcome!