Fixed same definition

Author: ferhatgec

example.cpp

@@ -6,6 +6,8 @@
 
 #include "inputplusplus.h"
 #include <iostream>
+#include <string>
+
 int main() {
 	if(inputplusplus::EchoGetInput(INPUT_PP_SPACE) == true) {
 		std::cout << "Space\n";

inputplusplus.h

@@ -120,7 +120,7 @@
 #define INPUT_PP_E_ACUTE 130
 #define INPUT_PP_A_CIRCUMFLEX 131
 #define INPUT_PP_A_UMLAUT 132
-#define INPUT_PP_GRAVE_ACCENT 133
+#define INPUT_PP_LETTER_A_GRAVE_ACCENT 133
 #define INPUT_PP_LETTER_A_WITH_RING 134
 #define INPUT_PP_MINUSCULE_C_CEDILLA 135
 #define INPUT_PP_E_CIRCUMFLEX 136