README.md in net-empty_port-0.0.1 vs README.md in net-empty_port-0.0.2

@@ -25,9 +25,22 @@
 
     Net::EmptyPort.used?(port)
 
     Net::EmptyPort.wait(port, 3)
 
+## Thanks
+
+This module is originally in a perl module [`Test::TCP`](https://github.com/tokuhirom/Test-TCP) written by tokuhirom. Thanks a lot.
+
+## See also
+
+### [glint](https://github.com/kentaro/glint)
+This module is similar, but only for starting a server process.
+
+## TODO
+
+- more test
+
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Add some feature'`)