Create a shiny quiz widget
shinyQuiz(id = paste0("quiz_", sample.int(1e+11, 1)), qu = NULL, yaml,
quiz.handler = NULL, add.handler = TRUE, single.check.btn = TRUE,
defaults = quizDefaults(lang = lang), lang = "en")
the id of the quiz
a list that contains the quiz fields as would have been parsed by read.yaml from package YamlObjects
alternatively to qu, is yaml a string that specifies the quiz
a function that will be called if the quiz is checked. The boolean argument solved is TRUE if the quiz was solved and otherwise FALSE