Separate the toString and toDOT methods.

include/ParseRule.h

@@ -20,6 +20,7 @@ class ParseRule {
 		void appendToRight(Symbol* appendee);
 
 		std::string toString();
+		std::string toDOT();
 
 	private:
 		int pointerIndex;

include/Parser.h

@@ -21,6 +21,7 @@ class Parser {
 
 		void loadGrammer(std::string grammerInputString);
 		std::string grammerToString();
+		std::string grammerToDOT();
 	private:
 		StringReader reader;
 		std::map<std::string, Symbol*> symbols;