Publish addons
Once you've modified
the example to your needs and built your own adding it's probably time to publish it on n2cms.com.
Create a zip package
First you'll need to use the publish feature in visual studio. Right-click on your add-on project and select "Publish..." from the list:

Select an appropriate location:

Clean up dll:s not directly related to your add-on:

Upload
Zip the published contents into a package and use the
add-on submission form to upload it to the site.