update travis

Author: blind-oracle

.travis.yml

@@ -3,8 +3,14 @@ language: go
 go:
   - 1.x
 
+env:
+  - DEP_VERSION=0.5.1
+
 before_install:
+  - curl -L -s https://github.com/golang/dep/releases/download/v${DEP_VERSION}/dep-linux-amd64 -o $GOPATH/bin/dep
+  - chmod +x $GOPATH/bin/dep
   - go get github.com/mattn/goveralls
+  - dep ensure
 
 script:
   - go test ./... -coverprofile=psql-streamer.coverprofile