Added main loop of parser.

src/Symbol.cpp

@@ -9,6 +9,10 @@ Symbol::~Symbol() {
 
 }
 
+const bool Symbol::operator==(const Symbol &other) {
+	return( name == other.name && isTerminal == other.isTerminal);
+}
+
 std::string Symbol::toString() {
 	return(name);
 }