Add a non-versioned "latest" artifact (sonatype-nexus-community#219)

* add 'latest' archive, test it in production. YOLO!!!

.goreleaser.yml

@@ -38,6 +38,10 @@ archives:
     id: default
     name_template: "{{ .ProjectName }}-v{{ .Version }}-{{ .Os }}-{{ .Arch }}"
     format: binary
+  -
+    id: latest
+    name_template: "{{ .ProjectName }}-latest-{{ .Os }}-{{ .Arch }}"
+    format: binary
   -
     id: homebrew
     name_template: "{{ .ProjectName }}-v{{ .Version }}-{{ .Os }}-{{ .Arch }}"
@@ -62,6 +66,7 @@ changelog:
 release:
   ids:
     - default
+    - latest
     - homebrew
   github:
     owner: sonatype-nexus-community
@@ -83,7 +88,7 @@ dockers:
     goos: linux
     goarch: amd64
     dockerfile: Dockerfile.goreleaser
-    binaries:
+    ids:
       - nancy
     build_flag_templates:
     - "--label=author='DJ Schleen'"
@@ -98,8 +103,8 @@ dockers:
     goos: linux
     goarch: amd64
     dockerfile: build/Dockerfile.alpine
-    binaries:
-    - nancy
+    ids:
+      - nancy
     build_flag_templates:
     - "--pull"
     - "--label=author='DJ Schleen'"