Added public/css/app-specific.css in .gitignore

Merge branch 'master' of github.com:24eme/signaturepdf

Airing the upload block and demo link

Update README.md

Organize works only in client side without server dialog, new langage…

…s (Deutsch, Italiano, Taqbaylit, Occitan, Türkçe) and several small bug fixes