added tests for all options
added tests for all options

cristoferdomingues/angular-cron-jobs,angular-cron-jobs/angular-cron-jobs,viltgroup/angular-cron-jobs,cristoferdomingues/angular-cron-jobs,jacobscarter/angular-cron-jobs,RajanRastogi/angular-quartz-cron,taxp/angular-cron-jobs-extended,vascofernandes/angular-cron-jobs,vascofernandes/angular-cron-jobs,angular-cron-jobs/angular-cron-jobs,taxp/angular-cron-jobs-extended,jacobscarter/angular-cron-jobs,RajanRastogi/angular-quartz-cron,viltgroup/angular-cron-jobs