I've published all of my games with CocoonJS, including Hungry Hal https://www.scirra.com/construct2/games/hungry-hal
My steps, as I am targeting more than just Android 5 and iOS8
Sign up for their cloud compiling service.
Download and install the latest plugin, and take a look at the example CAPX included with it. https://github.com/ludei/Construct-2-plugin
Export your project as CocoonJS (You may need to activate it by right clicking in the export windows and choose "Show depreciated exporters")
Setup everything on the cloud compiler, drop in your zip file that C2 created and export as Canvas+
You can also export and then try it in the CocoonJS Launcher app that is available for ios and android. Though I prefer testing actual compiled files.
If you have more questions, just ask.