Swallows -release-prompt-for-password for signed android builds

[Globegitter]

When running ember cordova:build --environment=production --platform=android and you have your keystore files defined in ant.properties cordova usually asks you for the according password:

-release-prompt-for-password:
    [input] Please enter keystore password (store:artificial-qbe-key.keystore):

This message gets swallowed and the build is taking forever.

[Globegitter]

This seems related to #53 and the two workarounds are either http://stackoverflow.com/questions/5334399/automation-for-android-release-build it seems or running the cordova build command directly