Add option to print FAILED instead of FAIL during the summary

For easier automation and searching for a test suite failure

src/unity.c

@@ -1323,6 +1323,9 @@ int UnityEnd(void)
     else
     {
         UnityPrintFail();
+#ifdef UNITY_DIFFERENTIATE_FINAL_FAIL
+        UNITY_OUTPUT_CHAR('E'); UNITY_OUTPUT_CHAR('D');
+#endif
     }
     UNITY_PRINT_EOL();
     UNITY_OUTPUT_COMPLETE();

src/unity.h

@@ -48,6 +48,7 @@ void tearDown(void);
 
 // Output
 //     - by default, Unity prints to standard out with putchar.  define UNITY_OUTPUT_CHAR(a) with a different function if desired
+//     - define UNITY_DIFFERENTIATE_FINAL_FAIL to print FAILED (vs. FAIL) at test end summary - for automated search for failure
 
 // Optimization
 //     - by default, line numbers are stored in unsigned shorts.  Define UNITY_LINE_TYPE with a different type if your files are huge