rename from cmd to weed for easier "go build"

go/weed/version.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+const (
+	VERSION = "0.28 beta"
+)
+
+var cmdVersion = &Command{
+	Run:       runVersion,
+	UsageLine: "version",
+	Short:     "print Weed File System version",
+	Long:      `Version prints the Weed File System version`,
+}
+
+func runVersion(cmd *Command, args []string) bool {
+	if len(args) != 0 {
+		cmd.Usage()
+	}
+
+	fmt.Printf("version %s %s %s\n", VERSION, runtime.GOOS, runtime.GOARCH)
+	return true
+}