Merge pull request #24 from diogodadalt/master

Refactoring in the node class
modificando CMakeLists.txt
Merge branch 'master' of http://github.com/lucaslazari/compiladores
mudanças...
...
Merge branch 'master' of http://github.com/diogodadalt/compiladores into diogodadalt-master

Conflicts:
	etapa5/CMakeLists.txt
	etapa5/src/tree/common.h
Merge pull request #25 from diogodadalt/master

Adding scope support (initial)
corrigindo conflito
Merge branch 'master' of http://github.com/lucaslazari/compiladores
Scope... almost done