chore(package): update grunt to version 1.0.1
chore(package): update grunt to version 1.0.1

http://greenkeeper.io/
rpl/web-ext,kumar303/web-ext,kumar303/web-ext,rpl/web-ext,shubheksha/web-ext,shubheksha/web-ext,mozilla/web-ext,mozilla/web-ext