building sample-app-master\react-native does not create apk

[ajuga2]

OS Windows 10. No problems with building webview-projects but with react-native sample:

C:\Users\Ajuga\Desktop\sample-app-master\react-native>androidjs b
Loading React modules
Installing React modules
Building React project

C:\Users\Ajuga\Desktop\sample-app-master\react-native>

No error messages, but no apk is created.

[Chhekur]

We haven't release Android JS development kit for react-native, still in development phase