update for go 1.11.x build

yinheli · yinheli · commit 3e04a25f79b3 · 2018-08-29T12:53:39.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,6 +2,7 @@ language: go
 
 go:
   - "1.10.x"
+  - "1.11.x"
   - master
 
 script:
