Merge pull request #39 from dolob-mrmr/hamzah

Merge pull request #38 from dolob-mrmr/master
Merge pull request #40 from dolob-mrmr/hamzah

edited main camera upload.
finalize cameraAPI
Merge pull request #41 from dolob-mrmr/vincent

finalize cameraAPI
Included Use Case Diagram, Data Class Diagram (not completed) and Sequence Diagram