show green and failed indices in status, rename red to failed in index ls (#81)

cmd/index.go

@@ -75,10 +75,10 @@ func IndexList(conf *cfg.Config) *cli.Command {
 				Aliases:     []string{"H"},
 			},
 			&cli.BoolFlag{
-				Name:        "reds",
+				Name:        "failed",
 				Usage:       "include only red failed indicies",
 				Destination: &conf.Failed,
-				Aliases:     []string{"r"},
+				Aliases:     []string{"f"},
 			},
 			&cli.StringSliceFlag{
 				Name:        "filter",