Add binary releases (#14)

This adds goreleaser so that new binaries will automatically be uploaded to Github when a tag is pushed. Goreleaser will be triggered by github action (#50).

.gitignore

@@ -7,4 +7,4 @@
 .tmp/
 /astro/graph.png
 /bin
-/vendor
+/dist

.goreleaser.yml

@@ -0,0 +1,32 @@
+project_name: astro
+archive:
+  format_overrides:
+    - goos: darwin
+      format: zip
+  replacements:
+    amd64: 64-bit
+    386: 32-bit
+    darwin: macOS
+before:
+  hooks:
+    - go mod download
+builds:
+  - binary: astro
+    main: ./astro/cli/astro/main.go
+    env:
+      - GO111MODULE=on
+    ignore:
+      - goos: darwin
+        goarch: 386
+    ldflags:
+      - -s -w -X github.com/uber/astro/astro/cli/astro/cmd.version={{.Version}} -X github.com/uber/astro/astro/cli/astro/cmd.commit={{.ShortCommit}} -X github.com/uber/astro/astro/cli/astro/cmd.date={{.Date}}
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - "^docs:"
+    - "^test:"
+checksum:
+  name_template: "checksums.txt"
+snapshot:
+  name_template: "{{ .Tag }}-next"

CHANGELOG.md

@@ -1,7 +1,8 @@
 # astro changelog
 
-## 0.5.0 (UNRELEASED, 2018)
+## 0.5.0 (UNRELEASED, 2019)
 
+* Add binaries via goreleaser (#14)
 * Adopt options pattern for `astro.NewProject` constructor (#26)
 * Refactor and improve integration tests to invoke them directly using cli
   rather than `os.exec` (#26)