Fix embed script for private asciicasts (fixes #194)
Fix embed script for private asciicasts (fixes #194)

asciinema/asciinema-server,SunDi3yansyah/asciinema.org,SunDi3yansyah/asciinema.org,asciinema/asciinema-server,SunDi3yansyah/asciinema.org,asciinema/asciinema.org,asciinema/asciinema.org,SunDi3yansyah/asciinema.org,asciinema/asciinema.org,asciinema/asciinema-server,asciinema/asciinema-server,asciinema/asciinema.org,SunDi3yansyah/asciinema.org