fix declaracao e comando.
Merge branch 'master' of github.com:Flamedragon/Compilador_Arthur.Rocha_Italo.Lessa

Conflicts:
	src/portugol.grammar
	src/portugol/analysis/Analysis.java
	src/portugol/analysis/AnalysisAdapter.java
	src/portugol/analysis/DepthFirstAdapter.java
	src/portugol/analysis/ReversedDepthFirstAdapter.java
	src/portugol/node/APrograma.java
	src/portugol/node/ASemicolonVar.java
adapting java expression to our comando.
adapting java way of treat expressions to portugol. Done equality, relational and math expression. Missing logical expressions.
tests of comando done until if.
Update README.md
adapting grammar to the 4 version of the specification.
Merge branch 'master' of github.com:Flamedragon/Compilador_Arthur.Rocha_Italo.Lessa
Merge branch 'master' of https://github.com/Flamedragon/Compilador_Arthur.Rocha_Italo.Lessa into Italo