Provide a usefull error when ask*() is not used wihtin a task()
Provide a usefull error when ask*() is not used wihtin a task()

cjsewell/deployer,deployphp/deployer,jverdeyen/deployer,deployphp/deployer,torinaki/deployer,deployphp/deployer,mbrodala/deployer,oanhnn/deployer,TheRatG/deployer