fix(git): add vendor in .gitignore

vendor/github.com/go-playground/universal-translator/.travis.yml

@@ -1,27 +0,0 @@
-language: go
-go:
-  - 1.13.4
-  - tip
-matrix:
-  allow_failures:
-    - go: tip
-
-notifications:
-  email:
-    recipients: dean.karn@gmail.com
-    on_success: change
-    on_failure: always
-
-before_install:
-  - go install github.com/mattn/goveralls
-
-# Only clone the most recent commit.
-git:
-  depth: 1
-
-script:
-  - go test -v -race -covermode=atomic -coverprofile=coverage.coverprofile ./...
-
-after_success: |
-  [ $TRAVIS_GO_VERSION = 1.13.4 ] &&
-  goveralls -coverprofile=coverage.coverprofile -service travis-ci -repotoken $COVERALLS_TOKEN