Setup GoReleaser and versioning.

.goreleaser.yml

@@ -0,0 +1,21 @@
+builds:
+- env:
+  - CGO_ENABLED=0
+  main: ./bin/main.go
+archive:
+  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:'

bin/main.go

@@ -15,21 +15,36 @@ import (
 
 const workers int = 4
 
-var bin pathflag.Path
-var src pathflag.Path
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+)
+
+var (
+	ver bool
+	bin pathflag.Path
+	src pathflag.Path
+)
 
 type result struct {
 	cmd *swap.Cmd
 	err error
 }
 
 func init() {
+	flag.BoolVar(&ver, "version", false, "The version of media swapper")
 	flag.Var(&bin, "bin", "The location of the ffmpeg or avconv binary")
 	flag.Var(&src, "src", "The source directory of mkv/m4a files or an individual mkv/m4a file to swap to mp4/mp3")
 	flag.Parse()
 }
 
 func main() {
+	if ver {
+		fmt.Printf("Version: %s\nCommit: %s\nDate: %s\n", version, commit, date)
+		os.Exit(0)
+	}
+
 	if bin.Path == "" {
 		fmt.Fprintln(os.Stderr, "The -bin flag must be specified")
 		os.Exit(1)