small cleanup

Author: jchanvfx

NodeGraphQt/base/graph.py

@@ -426,7 +426,7 @@ def format_color(clr):
             node.update()
 
             undo_cmd = NodeAddedCmd(self, node, node.model.pos)
-            undo_cmd.setText('created node')
+            undo_cmd.setText('create node: "{}"'.format(node.NODE_NAME))
             self._undo_stack.push(undo_cmd)
             self.node_created.emit(node)
             return node

README.md

@@ -26,7 +26,7 @@ applications that supports PySide and PySide2.
 
 ```python
 import sys
-from NodeGraphQt import QtWidgets
+from PySide2 import QtWidgets
 from NodeGraphQt import NodeGraph, Node, Backdrop, setup_context_menu
 
 # create a example node object with a input/output port.