updating PDFBox [PDFBOX-1602]
fix warning with minitest
custom build of PDFBox - 1.8.0 plus r1484277 (see PDFBOX-1603)
adds failing test about spaces around an ampersand that I don't have time to work on right now
Update README.md

--area argument should be quoted
Merge pull request #4 from clkao/patch-1

Update README.md
Merge branch 'master' of github.com:jazzido/tabula-extractor into tabledetection
use patched pdfbox
slightly shrink the width_of_space parameter when deciding whether to add a space, so spaces get added correctly (maybe because of kerning, or a changing width of space?)