Add vendor files for go build

vendor/github.com/alecthomas/chroma/.goreleaser.yml

@@ -0,0 +1,31 @@
+project_name: chroma
+release:
+  github:
+    owner: alecthomas
+    name: chroma
+brew:
+  install: bin.install "chroma"
+builds:
+- goos:
+  - linux
+  - darwin
+  - windows
+  goarch:
+  - amd64
+  - "386"
+  goarm:
+  - "6"
+  main: ./cmd/chroma/main.go
+  ldflags: -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.Date}}
+  binary: chroma
+archive:
+  format: tar.gz
+  name_template: '{{ .Binary }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm }}v{{
+    .Arm }}{{ end }}'
+  files:
+  - COPYING
+  - README*
+snapshot:
+  name_template: SNAPSHOT-{{ .Commit }}
+checksum:
+  name_template: '{{ .ProjectName }}-{{ .Version }}-checksums.txt'