Update README.md

README.md

@@ -19,6 +19,14 @@ FILE* hook_test(const char* filename, const char* open_type)
 hook::make_hook(&fopen, &hook_test);
 ```
 
+### Calling Original 
+
+`hook::get_func` is templated so that you can pass a function pointer I.E `&fopen` and the returned pointer will be of that type.
+
+```
+return hook::get_func(&fopen)(filename, open_type); // returned value is of type: FILE* (*)(const char*, const char*);
+```
+
 ### Disable Hook
 
 ```