first commit
Merge pull request #7 from a7medfahmy94/new_branch_leila

New branch leila
second commit
Merge pull request #8 from a7medfahmy94/new_branch_leila

add use case table
Third commit
Merge branch 'new_branch_leila' of github.com:a7medfahmy94/SE_Project
Merge branch 'master' of github.com:a7medfahmy94/SE_Project
final SRS