Switch Travis to Go 1.10

.travis.yml

@@ -6,7 +6,7 @@ addons:
   postgresql: "9.4"
 language: go
 go:
-  - 1.9
+  - "1.10"
 before_install:
   - npm install -g jshint
   - go get -u github.com/golang/lint/golint