added Polish text for realText generator

replace the text with one with more modern language
improve polish company names
improve common company names pattern probability
add ean barcode provider
Merge pull request #275 from nineinchnick/realText-pl

realText in pl_PL
Added fullPath parameter to Image provider to be able to have just the filename
Updated docs for $fullPath Image provider parameter
Merge pull request #277 from nineinchnick/improve-pl-company

Improve pl company
Merge pull request #274 from stefanosala/feature/fullpath

Added fullPath parameter to Image provider
add phpdoc comments and updated readme.md
Merge pull request #278 from nineinchnick/barcodes

add ean barcode provider