add goreleaser

.gitignore

@@ -1 +1,2 @@
 xxhashdir
+dist

.goreleaser.yml

@@ -0,0 +1,39 @@
+# This is an example goreleaser.yaml file with some sane defaults.
+# Make sure to check the documentation at http://goreleaser.com
+before:
+  hooks:
+    # you may remove this if you don't use vgo
+    - go mod download
+    # you may remove this if you don't need go generate
+    - go generate ./...
+builds:
+- 
+  id: "xxhashdir"
+  main: ./bin/xxhashdir.go
+  binary: xxhashdir
+  env:
+    - CGO_ENABLED=0
+  goos:
+    - linux
+    - darwin
+    - windows
+  goarch:
+    - amd64
+    - arm64
+archives:
+- replacements:
+    darwin: Darwin
+    linux: Linux
+    windows: Windows
+    386: i386
+    amd64: x86_64
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ .Tag }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'