Fix issue with Chrome v65 printing blank pages.

. Fix XMLHttpRequest url when loading pdf files
. Use a non-minified compiled file in package.json main field
. Added better support for HTML element styles

add support for json with nested objects

. Include dist folder

. Use minified version as entry point to npm package
. Add optional fallbackPrintable parameter

Add pdf loading hooks

Add documentTitle parameter option

correct json grid style

add grid styles optional params

add headerStyle optional param