- Automatically choose between wkhtml2pdf x64 and x32 versions,
according of host architecture.
- Replaced "dpkg -i" with "gdebi --n", in order to have installed
all wkhtml2pdf dependencies automatically, if any of them is missing
from the system.
- Make shortcuts in /usr/bin directory, instead of copying actual binary
files that are part of installed wkthml2pdf package.
- Added .gitignore in order to prevent garbage file upload to the
repository.