After review improvements.

- removed test folder we should find a better solution for testing `ReadFolder` method
- updated readme to reflect signature changes

README.md

@@ -49,12 +49,12 @@ var music gotree.GTStructure
 music.Name = "5 Minutes Alone"
 
 //Add Music to the Album
-album.Items = append(album.Items, music)
+album.Items = append(album.Items, &music)
 
 //Add Album to the Artist
-artist.Items = append(artist.Items, album)
+artist.Items = append(artist.Items, &album)
 
-gotree.PrintTree(artist)
+gotree.PrintTree(&artist)
 ```
 
 ### Read folder and print tree

gotree_test.go

@@ -4,24 +4,6 @@ import (
 	"testing"
 )
 
-// TestFolderTree should test if reading a folder returns rendered structure as expected
-func TestFolderTree(t *testing.T) {
-	tree := ReadFolder("test-resources")
-	actual := StringTree(tree)
-	expected := "test-resources\n" +
-		"├── dir1\n" +
-		"│   ├── dir3\n" +
-		"│   │   └── file2.txt\n" +
-		"│   └── file1.txt\n" +
-		"├── dir2\n" +
-		"│   └── file3.txt\n" +
-		"└── file4.txt\n"
-
-	if actual != expected {
-		t.Fatalf("Actual tree::\n[%s]\nis not the same as expected:\n[%s]", actual, expected)
-	}
-}
-
 // TestUpdatingItemsStructure should test whenever item updates in the tree structure are
 // reflected correctly in the rendered structure
 func TestUpdatingItemsStructure(t *testing.T) {