Removed 'using namespace std;' from documentation examples

Documentation/Examples/FileExample.cpp

Documentation/Examples/FileExampleCuda.cu

Documentation/Examples/FileExampleSaveAndLoad.cpp

Documentation/Examples/FileNameExample.cpp

...mples/FileNameExampleDistributedSystemNodeCoordinates.cpp

...ation/Examples/FileNameExampleDistributedSystemNodeId.cpp

Documentation/Examples/ObjectExample_getType.cpp

Documentation/Examples/ParameterContainerExample.cpp

Documentation/Examples/ParseObjectTypeExample.cpp

Documentation/Examples/StringExample.cpp

Documentation/Examples/StringExampleGetAllocatedSize.cpp

Documentation/Examples/StringExampleReplace.cpp

Documentation/Examples/StringExampleSetSize.cpp

Documentation/Examples/StringExampleSplit.cpp

Documentation/Examples/StringExampleStrip.cpp

Documentation/Examples/TimerExample.cpp

Documentation/Examples/TimerExampleLogger.cpp