code: function () {
  		var cwd = process.cwd();
  		var rootPath = cwd;
  		var newRootPath = null;
  		while (!fs.existsSync(path.join(process.cwd(), "node_modules/grunt"))) {
  			process.chdir("..");
  			newRootPath = process.cwd();
  			if (newRootPath === rootPath) {
  				return;
  			}
  			rootPath = newRootPath;
  		}
  		process.chdir(cwd);
  		return rootPath;
  	}
docs: Function that find the root path where grunt plugins are installed.
  
  @method findRoot
  @return String rootPath