run 'go get -u; make revendor'

Signed-off-by: Stephan Renatus <srenatus@chef.io>

vendor/github.com/spf13/cobra/.travis.yml

@@ -1,18 +1,31 @@
 language: go
+
+stages:
+  - diff
+  - test
+
 go:
-  - 1.4.3
-  - 1.5.4
-  - 1.6.2
+  - 1.10.x
+  - 1.11.x
+  - 1.12.x
   - tip
 
 matrix:
   allow_failures:
     - go: tip
+  include:
+    - stage: diff
+      go: 1.12.x
+      script: diff -u <(echo -n) <(gofmt -d -s .)
 
 before_install:
   - mkdir -p bin
-  - curl -Lso bin/shellcheck https://github.com/caarlos0/shellcheck-docker/releases/download/v0.4.3/shellcheck
+  - curl -Lso bin/shellcheck https://github.com/caarlos0/shellcheck-docker/releases/download/v0.6.0/shellcheck
   - chmod +x bin/shellcheck
+  - go get -u github.com/kyoh86/richgo
 script:
-  - PATH=$PATH:$PWD/bin go test -v ./...
+  - PATH=$PATH:$PWD/bin richgo test -v ./...
   - go build
+  - if [ -z $NOVET ]; then
+      diff -u <(echo -n) <(go vet . 2>&1 | grep -vE 'ExampleCommand|bash_completions.*Fprint');
+    fi