Hotreload rc0

I am working with the rc0 release of Ionic 2 rc0. I am trying to use hotreload.

The commands :

ionic run android  -l -c -s
ionic run android -lcs

Do not work.

My system informations :

Cordova CLI: 6.1.1
Ionic Framework Version: 2.0.0-rc.0
Ionic CLI Version: 2.1.0
Ionic App Lib Version: 2.1.0-beta.1
OS: Distributor ID:	Ubuntu Description:	Ubuntu 16.04.1 LTS 
Node Version: v6.6.0