WebStorm 8 now helps you to run Grunt tasks.
Simply right-click on your GruntFile, select Open Grunt Console, and you’ll now be able to double-click a task in the Grunt tool window to run it.
In order to get started, you’ll want to install Grunt’s command line interface (CLI) globally. You may need to use sudo (for OSX, *nix, BSD etc) or run your command shell as Administrator (for Windows) to do this (you can find more on Getting started with Grunt on gruntjs.com.
npm install -g grunt-cli
Please watch the video below for more details:
Develop with pleasure!
JetBrains WebStorm Team