Fix bug in debian init.d script
Fix bug in debian init.d script

Without --background option the system does not load anything after starting
shiny-server. This is not desirable behaviour, since if ssh starts after 
shiny-server (as it did in my case), you are left with broken system.
ekergy/shiny-ekergy,dpryan79/shiny-server,githubfun/shiny-server,ekergy/shiny-ekergy,trestletech/shiny-server,dpryan79/shiny-server,dpryan79/shiny-server,joequant/shiny-server,githubfun/shiny-server,nvoron23/shiny-server,nvoron23/shiny-server,trestletech/shiny-server,dpryan79/shiny-server,githubfun/shiny-server,nvoron23/shiny-server,joequant/shiny-server,githubfun/shiny-server,joequant/shiny-server,joequant/shiny-server,dpryan79/shiny-server,joequant/shiny-server,nvoron23/shiny-server,sneumann/shiny-server,trestletech/shiny-server,ekergy/shiny-ekergy,trestletech/shiny-server,ekergy/shiny-ekergy,trestletech/shiny-server,githubfun/shiny-server,nvoron23/shiny-server,sneumann/shiny-server,githubfun/shiny-server,githubfun/shiny-server,sneumann/shiny-server,joequant/shiny-server,dpryan79/shiny-server,sneumann/shiny-server,sneumann/shiny-server,dpryan79/shiny-server,ekergy/shiny-ekergy,sneumann/shiny-server,ekergy/shiny-ekergy,joequant/shiny-server,trestletech/shiny-server,ekergy/shiny-ekergy,sneumann/shiny-server,nvoron23/shiny-server