Fix english abstract.
Fix portuguese abstract.
Better analogy to Turing machines.
Better introduction.
Better description of CAs.
Fixed correct "auto" prefix usage.
Better description of CAs applications.
Typos.
Better description of Wolfram's work.
Better description of ECAs.
Typo.
Fixes for rule equivalence.
Fixed references.
Better description of Wolfram CA classes.
Better description of Li CA classes.
Braino.
Improve infinite languages description.
Improve description of mechanics of FAs.
Fixed regular language definition.
Typo.