Update packages

package.json

@@ -11,7 +11,7 @@
 	"devDependencies": {
 		"grunt": "~0.4.5",
 		"grunt-autoprefixer": "^3.0.3",
-		"grunt-concurrent": "~1.0.1",
+		"grunt-concurrent": "~2.0.0",
 		"grunt-contrib-cssmin": "~0.12.3",
 		"grunt-contrib-jshint": "~0.11.2",
 		"grunt-contrib-sass": "^0.9.2",
@@ -19,7 +19,7 @@
 		"grunt-contrib-watch": "~0.6.1",
 		"grunt-shell": "^1.1.2",
 		"jit-grunt": "^0.9.1",
-		"jshint-stylish": "^2.0.0",
+		"jshint-stylish": "^2.0.1",
 		"time-grunt": "^1.2.1"
 	}
 }