delete testDavidMain File
Merge remote-tracking branch 'origin/DavidWin' into Sherry
not important
update functions about Line class
update Line functions
dave thing
solve conflicts in header file
Merge remote-tracking branch 'origin/DavidWin' into Sherry
minor updates to transformation
Merge remote-tracking branch 'origin/DavidWin' into Sherry
correct
Finished rotation get set and transform get set
add translate functions and explanations
merged with joe fixed conflicts

added get/ set scale to Transformation
merged all tranformation

Complete untested transformation class