update readme with images

README.md

@@ -4,4 +4,10 @@ customers using Visual Studio Code. It includes the following set of
 Visual Studio Code extensions:
 
 * [Microsoft Python Extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=ms-python.python)
+
+![Microsoft Python Extension for Visual Studio Code](https://raw.githubusercontent.com/microsoft/vscode-python/master/images/general.gif)
+
+
 * [YAML Support by Red Hat](https://marketplace.visualstudio.com/items?itemName=redhat.vscode-yaml)
+
+![YAML Support by Red Hat](https://raw.githubusercontent.com/redhat-developer/vscode-yaml/master/images/demo.gif)