moved TypeWrapper from ExtendItem.h to common.h.
Added an example for typewrapper.
Renamed Comman.h to TypeWrapper.h.
Some modifing with renamed Comman.h to TypeWrapper.h.
Modified ExtendItem.
moved class Split from StringPlus.h to Split.h
Added an example for StringPlus
removed operator <<
added a method toBoolean
Added a class named arg.
Added a Added a class named env.