Treeview Docs

Added Treeview docs
Improved some stuff in the treeview object

docs/objects/Treeview/getParent.md

@@ -0,0 +1,31 @@
+## getParent
+
+### Description
+
+The `getParent` method returns the parent node of a specified node within a Treeview object.
+
+### Returns
+
+1. `node` The parent node of the specified node, or nil if the node is a root node
+
+### Usage
+
+* Creates a Treeview, adds a child node, and retrieves its parent:
+
+```lua
+local basalt = require("basalt")
+
+local mainFrame = basalt.createFrame()
+local treeview = mainFrame:addTreeview()
+
+local rootNode = treeview:getRoot()
+local childNode = rootNode.addChild("Child Node")
+
+local parentNode = childNode.getParent()
+
+basalt.debug("Parent node:", parentNode)
+
+basalt.autoUpdate()
+```
+
+In this example, a Treeview object is created and added to the mainFrame. The `getRoot` method is used to access the root node, and a new child node is added to it using the `addChild` method. The `getParent` method is then used to retrieve the parent node of the child node, which is the root node in this case.