Added exclusion for shinyapps secrets
Added exclusion for shinyapps secrets

widdowquinn/Teaching-Dundee-BS32010,widdowquinn/Teaching-Dundee-BS32010,widdowquinn/Teaching-2015-03-17-UoD_compgenvis,widdowquinn/Teaching-Dundee-BS32010,widdowquinn/Teaching-2015-03-17-UoD_compgenvis,widdowquinn/Teaching-2015-03-17-UoD_compgenvis