README.md in petitest-0.1.1 vs README.md in petitest-0.1.2

- old
+ new

@@ -104,5 +104,9 @@
 
   Started:  2017-03-22T05:40:32.846640+09:00
   Finished: 2017-03-22T05:40:32.846784+09:00
   Total:    0.000144s
 ```
+
+## Plug-ins
+
+- https://github.com/petitest/petitest-power_assert