1. now it is possible to add footer
2. added username & password to access protected urls
updated according to code changes
issue #3
issue #4
file system files
issue #6
Added verification that the folder where PDF and temporary html files are going to be written is indeed writable.
Forgot a ";"
Merge pull request #7 from clemherreman/patch-1

Veryfing that the PDF/temp html fodler is writable
Added possibility to specify the margins of the PDF
Fix: temporary HTML wasn't deleted.
conflicts during merge
Content-length specifies number of bytes, not number of symbols.
Merge pull request #11 from stormbreakerbg/patch-1

Content-length byte number fix
Moved default values to property declaration. Refactored code acording to ZF code standard.
remove requirement for title
option to run wkhtmltopdf in a virtual X session
Merge pull request #13 from chroto/c0aa8163850f80fc24ba45d244c050

Remove requirement for --title option
Merge pull request #14 from chroto/xsession

option to run wkhtmltopdf in a virtual X session
Added `setWindowStatus` and `getWindowStatus` for handling --window-status parameter for binarry, also added it to contructor first input params processing list and added a line for adding this to command line in the `_getCommand` method.