Alternatively you can use Visual Studio Community with Tools for Apache Cordova (all for free).
https://www.visualstudio.com/vs/community/
https://taco.visualstudio.com/en-us/doc ... e-cordova/
Create a Javascript Cordova project in VS, paste the file output from Construct 2 into the www folder in the new project - and you're pretty much there.
I've used this setup to launch on Google Play, Amazon App Store, App Store (Apple), and Windows Store (for what it's worth!)