Permite criar ASTNode via ICompilationUnit

WAY-38
Merge pull request #16 in WAY/way from WAY-38-permitir-criacao-de-nos-a-partir-de to MOE/WAY-1-integracao-way-e-way-eclipse

* commit 'f046971b8c96ddeddb5f5b41554f5f2666f2a32a':
  Permite criar ASTNode via ICompilationUnit