fix warnings
-New API for result type.
-copy constructor die
Usage of the new API for Result
-implementation of HelpNode.
-Allow the command help to work
-better understanding of type
Simplified the command before give it to the parser.
implementation of the help node.
Merge branch 'master' of github-as-renaud:obiwankennedy/DiceParser
-Add readInstructionOperator
@TODO must be improved.
-removal of commented out lines.
-remove debug output.
-Add example for several dice command in one line.