Update README.md

Author: jchanvfx

README.md

@@ -1,14 +1,19 @@
-## NodeGraphQt
 
-<img src="/docs/_images/logo.png" title="logo">
+# NodeGraphQt
+
+<p align="center">
+    <a href="https://jchanvfx.github.io/NodeGraphQt" target="_blank">
+    <img src="/docs/_images/logo.png" title="logo">
+    </a>
+</p>
 
 ``NodeGraphQt`` is a node graph UI framework for `PySide2` that can be implemented and re-purposed into 
 applications.
 
 <img src="/docs/_images/screenshot.png" width="100%" title="NodeGraphQt">
 
 
-#### Documentation
+## Documentation
 
 <a href="https://jchanvfx.github.io/NodeGraphQt" target="_blank">https://jchanvfx.github.io/NodeGraphQt</a>
 
@@ -17,15 +22,15 @@ See the [basic_example.py](/examples/basic_example.py) python script from this r
 More examples can be found in the API documentation:<br>
 https://jchanvfx.github.io/NodeGraphQt/api/html/examples/ex_overview.html#simple-example
 
-#### Vertical Layout
+## Vertical Layout
 
 <img src="/docs/_images/vertical_layout.png" width="600" title="Vertical Layout">
 
-#### Pipe Layout
+## Pipe Layout
 
 <img src="/docs/_images/pipe_layout_types.gif" width="600" title="Pipe Layout">
 
-#### Custom Widgets
+## Custom Widgets
 
 https://jchanvfx.github.io/NodeGraphQt/api/html/custom_widgets.html