Add goreleaser

And github action on tag

.github/workflows/release.yml

@@ -0,0 +1,26 @@
+name: release
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+  release:
+    name: Goreleaser
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.13
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v1
+        with:
+          args: release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GO111MODULE: on
+

.goreleaser.yml

@@ -0,0 +1,24 @@
+env:
+- GO111MODULE=on
+before:
+  hooks:
+    - go mod tidy
+builds:
+- binary: bump
+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:'