fix typos in Demos/README.md
@@ -1,5 +1,5 @@
-## Xamrin Dev Days Demos
+## Xamarin Dev Days Demos
-Feel free to browse through the demo apps that were presenter here at Xamarin Dev Days!
+Feel free to browse through the demo apps that were presented here at Xamarin Dev Days!
If you have any trouble please up an GitHub issue.
James Montemagno