Documentation on caching

[twsh]

I think there's a small mistake in the documentation for caching: FileCache is imported as 'FileCache' but called as 'pdfquery.FileCache'. This works for me:

from pdfquery.cache import FileCache
pdfquery.PDFQuery("tests/samples/IRS_1040A.pdf", parse_tree_cacher=FileCache("/tmp/"))

(It also seems to be formatted differently from the other examples.)

[jcushman]

Thanks!