travis setting

AtsushiSakai · AtsushiSakai · commit 2c6b388d6f2d · 2018-11-04T10:48:56.000+09:00
diff --git a/README.md b/README.md
@@ -79,7 +79,7 @@ See this paper for more details:
 
 # Requirements
 
-- Python 3.6.x
+- Python 3.6.x (2.7 is not supported)
 
 - numpy
 
