Add goreleaser

.gitignore

@@ -1,3 +1,4 @@
 sem
 bin/
 cli
+dist

.goreleaser.yml

@@ -0,0 +1,39 @@
+project_name: cli
+before:
+  hooks:
+  - go get ./...
+builds:
+- env:
+  - CGO_ENABLED=0
+  goos:
+    - linux
+    - darwin
+  goarch:
+    - 386
+    - amd64
+archive:
+  name_template: '{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}'
+  replacements:
+    darwin: Darwin
+    linux: Linux
+    386: i386
+    amd64: x86_64
+checksum:
+  name_template: '{{ .ProjectName }}_checksums.txt'
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'
+    - Merge pull request
+    - Merge branch
+brew:
+  github:
+    owner: semaphoreci
+    name: homebrew-tap
+  folder: Formula
+  homepage:  https://semaphoreci.com
+  description: Semaphore 2.0 command line interface.
+  test: |
+    system "#{bin}/sem version"

.semaphore/brewrelease.yml

@@ -0,0 +1,24 @@
+version: "v1.0"
+name: Release
+agent:
+  machine:
+    type: e1-standard-2
+    os_image: ubuntu1804
+blocks:
+  - name: "Release"
+    task:
+      env_vars:
+        - name: GO111MODULE
+          value: "on"
+      secrets:
+        - name: sem-robot-ghtoken
+      prologue:
+        commands:
+          - sem-version go 1.11
+          - "export GOPATH=~/go"
+          - "export PATH=/home/semaphore/go/bin:$PATH"
+          - checkout
+      jobs:
+      - name: Sem Cli
+        commands:
+          - curl -sL https://git.io/goreleaser | bash -s -- --rm-dist

.semaphore/semaphore.yml

@@ -38,3 +38,10 @@ promotions:
 
   - name: Release Stable
     pipeline_file: "stable.yml"
+
+  - name: chmrelease
+    pipeline_file: brewrelease.yml
+    auto_promote_on:
+      - result: passed
+        branch:
+          - "^refs/tags/v*"