build sys, free, delete

src/main.c

@@ -24,4 +24,16 @@ int main(void)
   char *val3 = kv_get(table, "fake");
 
   printf("%s %s %s\n", val, val2, val3);
+
+  kv_delete(table, "goodbye");
+  val = NULL;
+  val = kv_get(table, "goodbye");
+
+  printf("%s %s %s\n", val, val2, val3);
+
+  kv_free(table);
+  table = NULL;
+
+  val = kv_get(table, "goodbye");
+  printf("%d\n", val);
 }