Update Treeview version in install docs

Author: AmrDeveloper

docs/full-example.md

@@ -67,4 +67,10 @@ List<TreeNode> roots = new ArrayList<>();
 roots.add(root1);
 
 treeViewAdapter.updateTreeNodes(roots);
+```
+
+Don't forget to setup the RecyclerView layout manager
+
+```java
+recyclerView.setLayoutManager(LinearLayoutManager(this));
 ```

docs/install.md

@@ -3,5 +3,5 @@
 You can install TreeView easily from Maven Central
 
 ```groovy
-implementation 'io.github.amrdeveloper:treeview:1.1.4'
+implementation 'io.github.amrdeveloper:treeview:1.2.0'
 ```