fix(package): update babel-runtime to version 6.20.0 (#667)
fix(package): update babel-runtime to version 6.20.0 (#667)

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