Fails if there are spaces in the outfile

[danhalligan]

For example, this appears to fail:

  @converter = PandocRuby.new(
    "input.md", 
    :from => :markdown, 
    :output => "my output.pdf"
  )

It can be resolved by quoting the output file:

  @converter = PandocRuby.new(
    "input.md", 
    :from => :markdown, 
    :output => "'my output.pdf'"
  )

However, I wonder if it is worth creating a more general fix within pandoc-ruby?

I've tested this only in version 2.0.1 (apologies if this has already been fixed!)

[xwmx]

Thanks for the heads up! This has finally been fixed as of version 2.1.2.

[mvz]

This change broke using Pathname objects for these arguments.