fix .travis.yml file yaml format

Helperhaps · Helperhaps · commit 598c479e9b75 · 2017-07-10T09:34:19.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -5,8 +5,8 @@ python:
 # - "3.2"
 # - "3.3"
 # - "3.4"
-- "3.5"
-- "3.6"
+  - "3.5"
+  - "3.6"
 
 # command to install dependencies
 install:
