Added a benchmark tool

Source/Problem17.cpp

@@ -33,7 +33,6 @@
 int Problem17::TOP_NUM = 1000;
 
 Problem17::Problem17() : Problem("If all the numbers from 1 to 1000 inclusive were written out in words, how many letters would be used?"), letterCount(0){
-
 }
 
 std::string Problem17::makeWord(int num){
@@ -210,3 +209,8 @@ uint64_t Problem17::getLetterCount() const{
 	}
 	return letterCount;
 }
+
+void Problem17::reset(){
+	Problem::reset();
+	letterCount = 0;
+}