Merge pull request #29 from dolob-mrmr/vincent

Modified the content of the CameraAPI
Merge pull request #34 from dolob-mrmr/master

111014
Merge pull request #35 from dolob-mrmr/hamzah

Merge pull request #34 from dolob-mrmr/master
finalised usecase diagram. updated usecase desription
Merge pull request #36 from dolob-mrmr/zhihao

finalised usecase diagram. updated usecase description
DBConnector implementation in androidcamera api