Merge pull request #249 from dvrkps/patch-1

travis: update go versions

Author: chris-ramon

.travis.yml

@@ -1,8 +1,8 @@
 language: go
 
 go:
-  - 1.8
-  - 1.9
+  - 1.8.x
+  - 1.9.x
   - tip
 
 matrix:
@@ -13,7 +13,6 @@ matrix:
 before_install:
   - go get github.com/axw/gocov/gocov
   - go get github.com/mattn/goveralls
-  - go get golang.org/x/tools/cmd/cover
 
 script:
   - $HOME/gopath/bin/goveralls -service=travis-ci