the first preview of EPP.
add some new structures like "define","class","class member variable"
and "class member event".
Initial commit
Connect to the GITHUB.Merge branch 'master' of https://github.com/xuhongxu96/EPlusPlus
add all CLASS structures.
add all CLASS structures.
Update mainwindow.cpp
Merge branch 'master' of github.com:xuhongxu96/EPlusPlus

Conflicts:
	mainwindow.cpp
Merge branch 'master' of github.com:xuhongxu96/EPlusPlus
Merge branch 'master' of github.com:xuhongxu96/EPlusPlus

Conflicts:
	README.md