Make sure example matches current example code.

readme.md

@@ -63,6 +63,7 @@ More detailed documentation can be found at the following locations:
 
 static const char* const FILENAME = "test.store";
 static const char* const STRING_TO_SAVE = "Hey, this is an example string to store!";
+static const TOStoreObjID ID = 42;
 
 int main(int argc, const char* argv[]) {
     TOStoreHnd store = NULL;
@@ -72,10 +73,14 @@ int main(int argc, const char* argv[]) {
         return error;
     }
     const uint32_t size = strlen(STRING_TO_SAVE) + 1; // null terminator
-    error = ostore_addObjectWithId(store, STRING_TO_SAVE, size);
+    error = ostore_addObjectWithId(store, ID, size);
     if ( error != ERR_OK) {
         printf("there was an error saving the object %d", error);
-
+    } else {
+        error = ostore_write(store, ID, 0, STRING_TO_SAVE, size);
+        if ( error != ERR_OK ) {
+            printf("there was an error writing to the store %d", error);
+        }
     }
     ostore_close(&store);
     printf("String saved in the test store\n");