Use mod vendor for vendored directory (backwards compatible)

vendor/github.com/lrstanley/girc/.travis.yml

@@ -0,0 +1,26 @@
+language: go
+go:
+- 1.8
+- 1.9
+- tip
+before_install:
+- go get -v github.com/golang/lint/golint
+script:
+- $HOME/gopath/bin/golint -min_confidence 0.9 -set_exit_status
+- GORACE="exitcode=1 halt_on_error=1" go test -v -coverprofile=coverage.txt -race -timeout 3m -count 3 -cpu 1,4
+- go tool vet -v -all .
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
+branches:
+  only:
+  - master
+notifications:
+  irc:
+    channels:
+    - irc.byteirc.org#/dev/null
+    template:
+    - "%{repository} #%{build_number} %{branch}/%{commit}: %{author} -- %{message}
+      %{build_url}"
+    on_success: change
+    on_failure: change
+    skip_join: false