README file
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Changing list symbol.
Initial model and interpreter interfaces
Added documentation, basic regex implementation and test cases
Documentation and README.md
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Improved documentation in README.me. Merged with grammar.txt
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typos
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Style changes in README.md
Removed grammar.txt
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Added "What is it?", "What is it for?", "How does it work?" and "Future steps" sections
Passing the ShapeAmbient as an argument of interpret() and make Interpreter an interface
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Adding documentation about tokens.
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Added setposition to the examples.
Added shapes() method in ShapeAmbient
Adding class diagram
Adding class diagram to README.md
Added relationship between BasicShapeAmbient and Shape in UML
Merge branch 'master' of https://github.com/mgiorgio/shapes4learn