1.Setup a Node.js application using provided source code.
2.Setup Box App. See https://box-content.readme.io/docs/frequently-asked-questions and https://box-content.readme.io/docs/box-web-application-integrations.
3.List the plugin in the Box App Gallery. See:
-https://box-content.readme.io/docs/frequently-asked-questions -> "Box App Gallery" section
-https://box-content.readme.io/docs/box-web-application-integrations -> "Making Your Integration Publicly Available" section
-https://cloud.app.box.com/appgallerylisting (a link from the previous section above)