add success message to give user feedback on the command

Author: kcboyle

cli/cmd/channel_disable_semantic_versioning.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"errors"
+	"fmt"
 	"github.com/spf13/cobra"
 )
 
@@ -28,5 +29,8 @@ func (r *runners) channelDisableSemanticVersioning(cmd *cobra.Command, args []st
 		return err
 	}
 
+	fmt.Fprintf(r.w, "Semver successfully disabled for channel %s\n", chanID)
+	r.w.Flush()
+
 	return nil
 }

cli/cmd/channel_enable_semantic_versioning.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"errors"
+	"fmt"
 	"github.com/spf13/cobra"
 )
 
@@ -28,5 +29,8 @@ func (r *runners) channelEnableSemanticVersioning(cmd *cobra.Command, args []str
 		return err
 	}
 
+	fmt.Fprintf(r.w, "Semver successfully enabled for channel %s\n", chanID)
+	r.w.Flush()
+
 	return nil
 }