add link on main shiny page to rbloggers-twitter
add link on main shiny page to rbloggers-twitter

LucianoSP/shiny-server_daattali,hansthompson/shiny-server,hansthompson/shiny-server,hansthompson/shiny-server,daattali/shiny-server,daattali/shiny-server,LucianoSP/shiny-server_daattali,daattali/shiny-server,englianhu/daattali-shiny-server,englianhu/daattali-shiny-server,englianhu/daattali-shiny-server,LucianoSP/shiny-server_daattali