chore(package): update mocha to version 3.4.1 (#947)
chore(package): update mocha to version 3.4.1 (#947)


shubheksha/web-ext,kumar303/web-ext,mozilla/web-ext,rpl/web-ext,shubheksha/web-ext,mozilla/web-ext,kumar303/web-ext,rpl/web-ext