added use_case_check_in as a lyx document
Merge branch 'master' of https://github.com/jannickj/SystemIntegrationStudy
Added fit table and renamed check in to toll tag check in
Added sequence diagram of toll tag check in
Added all needed diagram for use case: Toll tag check in
Merge branch 'master' of https://github.com/jannickj/SystemIntegrationStudy into checkInSingleTicket