add Activity Diagram
Sequence Diagram
add User Case Diagram
Revert "add Activity Diagram"

This reverts commit e683729d3aff5550b9fecec0229b43f9f9de09b1.
Revert "Revert "add Activity Diagram""

This reverts commit 0c44e0a9c567db3095feb7a1f0401d0c060f4965.
Revert "add Activity Diagram"

This reverts commit e683729d3aff5550b9fecec0229b43f9f9de09b1.
add report slide
Merge branch 'horizontal-master' of github.com:tranvictor/landlord into horizontal-master