REIMPLEMENTATION grammata v0.2.0.20

[NEEDS COMMENTS AND MAKEUP] implemented parser for grammata scripts
    Grammata.Language.AST
    Grammata.Language.AST.Logical
    Grammata.Language.AST.Imperative
    Grammata.Language.AST.Functional

added and successfully test an example
    parseExample.gr

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Changes to be committed:
	modified:   grammata.cabal
	modified:   src/Grammata/Language.hs
	modified:   src/Grammata/Language/AST.hs
	modified:   src/Grammata/Language/AST/Functional.hs
	modified:   src/Grammata/Language/AST/Imperative.hs
	modified:   src/Grammata/Language/AST/Logical.hs
	new file:   src/parserExample.gr