chore(package): update qs to version 6.2.1 (#1156)
chore(package): update qs to version 6.2.1 (#1156)

https://greenkeeper.io/
hekike/node-restify,restify/node-restify,myroid/node-restify,mcavage/node-restify,gergelyke/node-restify,myroid/node-restify,restify/node-restify,kusor/node-restify