Added screenshots

Author: microcoder

README.md

@@ -1,7 +1,10 @@
-# jupyterlab-ubu-theme
+# Jupyterlab Ubu Theme
 
 Light theme for Jupyter Lab
 
+<img src="https://raw.githubusercontent.com/microcoder/jupyterlab-ubu-theme/master/screenshots/jupyterlab-ubu-theme-1.png" />
+<img src="https://raw.githubusercontent.com/microcoder/jupyterlab-ubu-theme/master/screenshots/jupyterlab-ubu-theme-2.png" />
+
 ## Prerequisites
 
 * JupyterLab
@@ -15,7 +18,7 @@ git clone https://github.com/microcoder/jupyterlab-ubu-theme
 jupyter labextension install jupyterlab-ubu-theme
 ```
 
-## Uninstall
+## Uninstallation
 
 ```bash
 jupyter labextension uninstall jupyterlab-ubu-theme