remove coverage

.travis.yml

@@ -4,14 +4,7 @@ go:
 - 1.4
 - 1.5
 - 1.6
-before_install:
-  - go get github.com/axw/gocov/gocov
-  - go get github.com/mattn/goveralls
-  - go get golang.org/x/tools/cmd/cover
-  - go get github.com/gin-gonic/gin
-  - go get github.com/labstack/echo
-  - go get github.com/go-fsnotify/fsnotify
 install:
   - go get github.com/gorilla/websocket
 script:
-  - $HOME/gopath/bin/goveralls -service=travis-ci
+  - go test