Update README.md (#13)

khaledkhamis · AdrianSkierniewski · commit d2bc288f3c83 · 2017-02-15T17:24:49.000+01:00
diff --git a/README.md b/README.md
@@ -114,7 +114,7 @@ $treeRoot = $root->buildTree($root->findDescendants()->get())
 
 ### Getting leaf nodes
 ```php
-Tree::getLeafs();
+Tree::getLeaves();
 ```
 
 ### Map from array
