PDF download plugin added

I’ve added a plugin that allows you to download a PDF version of a post. This may be of use for some purposes, however, the current plugin does not include the comments for a post (which can be very illuminating). Nor does it convert non-Latin characters or accented Latin ones. It is what it is. Also, videos from popular sites such as YouTube or Vimeo are converted to links in the pdf. Please note the header, which indicates the presumptive intellectual property ownership by the author of the particular post. For citation norms governing blogs, see this MLA style summary.

There is a link along the bottom of each post for the purpose. Cheers.