Implemented unit tests for empty strings in CPF and CNPJ validation.
Implemented CEP validation
Implemented CEP validation.
Removed duplicated function for CEP
Merge branch 'master' into dev

Conflicts:
	maoli.min.js
	test/test-cnpj.js
	test/test-cpf.js
Refactored the code.
Refactored the code.
Implemented unit test for empty CEP.
Updated README file