chore(package): update grunt-contrib-concat to version 1.0.1
chore(package): update grunt-contrib-concat to version 1.0.1

https://greenkeeper.io/
vernak2539/fuelux,swilliamset/fuelux,cormacmccarthy/fuelux,ExactTarget/fuelux,futuremint/fuelux,cormacmccarthy/fuelux,ExactTarget/fuelux,afz/fuelux,futuremint/fuelux,swilliamset/fuelux,afz/fuelux,vernak2539/fuelux