Added images for syntactical analysis.
Added lexical grammar from previous exercise.
Added rules for constants.
Fixed header from previous example. Regenerated files.
Added git settings generated by VS addon.
Implemented label rule with multiple uint identifiers
Added bison rules for procedure and function.
Added image for statement.
Added test for procedure and function declarations.
Added rules for expression.
Added rules for if and while with already resolved shift/reduce conflict.
Added section for helper rules.