Update package.json

package.json

@@ -7,23 +7,23 @@
 		"url": "https://github.com/markoheijnen/tabify-edit-screen.git"
 	},
 	"author": "Marko Heijnen",
-	"license": "GPLv2 or later",
+	"license": "GPL-2.0+",
 	"devDependencies": {
 		"grunt": "~0.4.5",
-		"grunt-contrib-clean": "~0.5.0",
-		"grunt-contrib-copy": "~0.5.0",
-		"grunt-contrib-cssmin": "~0.10.0",
-		"grunt-contrib-uglify": "~0.5.0",
-		"grunt-glotpress": "~0.1.0",
-		"grunt-wp-i18n": "~0.4.6",
+		"grunt-contrib-clean": "~1.0.0",
+		"grunt-contrib-copy": "~0.8.2",
+		"grunt-contrib-cssmin": "~0.14.0",
+		"grunt-contrib-uglify": "~0.11.1",
+		"grunt-glotpress": "~0.2.1",
+		"grunt-wp-i18n": "~0.5.4",
 
 
 
-		"grunt-contrib-concat": "~0.5.0",
-		"grunt-contrib-imagemin": "~0.4.1",
-		"grunt-contrib-jshint": "~0.10.0",
-		"grunt-contrib-qunit": "~0.5.2",
-		"grunt-cssjanus": "~0.2.2",
+		"grunt-contrib-concat": "~1.0.0",
+		"grunt-contrib-imagemin": "~1.0.0",
+		"grunt-contrib-jshint": "~1.0.0",
+		"grunt-contrib-qunit": "~1.0.1",
+		"grunt-cssjanus": "~0.2.4",
 		"grunt-jsvalidate": "~0.2.2"
 	}
 }