CLI cleanup (#33)

* Moved cli root command to tap subcommand.

* tap subcommand works.

* Added view and fetch placeholders.

* Updated descriptions.

* Fixed indentation.

* Added versio subcommand.

* Removed version flag.

* gofmt.

* Changed pod from flag to arg.

* Commented out "all namespaces" flag.

cli/cmd/view.go

@@ -0,0 +1,19 @@
+package cmd
+
+import (
+	"errors"
+
+	"github.com/spf13/cobra"
+)
+
+var viewCmd = &cobra.Command{
+	Use:   "view",
+	Short: "Open GUI in browser",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return errors.New("Not implemented")
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(viewCmd)
+}