feat: add demo video

README.md

@@ -1,3 +1,6 @@
 # unifood
 
 University restaurant CLI that allows to retrieve menu information
+
+## Demo
+![Demonstration video](docs/res/demo.mp4)

core/output/table.go

@@ -41,6 +41,7 @@ func (f *TableFormatter) Format(list *interfaces.ResourceList) (io.Reader, error
 
 	// Setup table
 	t := table.NewWriter()
+	t.SetOutputMirror(outputBuffer)
 	t.SetStyle(table.StyleLight)
 
 	// Write header
@@ -65,22 +66,15 @@ func (f *TableFormatter) Format(list *interfaces.ResourceList) (io.Reader, error
 	}
 
 	// Render
-	output := func() string {
 	switch f.RenderFormat {
 	case tableFormatCSV:
-			return t.RenderCSV()
+		t.RenderCSV()
 	case tableFormatHTML:
-			return t.RenderHTML()
+		t.RenderHTML()
 	case tableFormatMarkdown:
-			return t.RenderMarkdown()
+		t.RenderMarkdown()
 	default:
-			return t.Render()
+		t.Render()
-		}
-	}()
-
-	_, err := outputBuffer.WriteString(output)
-	if err != nil {
-		return nil, fmt.Errorf("failed to write rendered table: %w", err)
 	}
 
 	return outputBuffer, nil