Factor each commmand into its own package

cmd/authorize/authorize.go

@@ -0,0 +1,24 @@
+package authorize
+
+import (
+	"github.com/ncw/rclone/cmd"
+	"github.com/ncw/rclone/fs"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	cmd.Root.AddCommand(authorizeCmd)
+}
+
+var authorizeCmd = &cobra.Command{
+	Use:   "authorize",
+	Short: `Remote authorization.`,
+	Long: `
+Remote authorization. Used to authorize a remote or headless
+rclone from a machine with a browser - use as instructed by
+rclone config.`,
+	Run: func(command *cobra.Command, args []string) {
+		cmd.CheckArgs(1, 3, command, args)
+		fs.Authorize(args)
+	},
+}