change test runner

AtsushiSakai · AtsushiSakai · commit bd5da13d7310 · 2018-01-16T22:57:00.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -16,4 +16,4 @@ install:
 
 script:
   - python --version
-  - python -m unittest discover tests
+  - ./runtests.sh
