Update dependencies

package.json

@@ -20,28 +20,28 @@
   "homepage": "https://github.com/addyosmani/essential-js-design-patterns",
   "devDependencies": {
     "grunt": "~0.4.5",
-    "grunt-contrib-copy": "~0.5.0",
-    "grunt-contrib-concat": "~0.5.0",
-    "grunt-contrib-uglify": "~0.5.1",
-    "grunt-contrib-compass": "~0.9.1",
-    "grunt-contrib-jshint": "~0.10.0",
-    "grunt-contrib-cssmin": "~0.10.0",
-    "grunt-contrib-connect": "~0.8.0",
+    "grunt-autoprefixer": "^2.0.0",
+    "grunt-bower-install": "~1.6.0",
+    "grunt-concurrent": "^1.0.0",
     "grunt-contrib-clean": "~0.6.0",
+    "grunt-contrib-compass": "^1.0.1",
+    "grunt-contrib-concat": "~0.5.0",
+    "grunt-contrib-connect": "^0.9.0",
+    "grunt-contrib-copy": "^0.7.0",
+    "grunt-contrib-cssmin": "^0.11.0",
     "grunt-contrib-htmlmin": "~0.3.0",
-    "grunt-bower-install": "~1.6.0",
-    "grunt-contrib-imagemin": "~0.8.1",
+    "grunt-contrib-imagemin": "^0.9.2",
+    "grunt-contrib-jshint": "~0.10.0",
+    "grunt-contrib-uglify": "^0.7.0",
     "grunt-contrib-watch": "~0.6.1",
-    "grunt-rev": "~0.1.0",
-    "grunt-autoprefixer": "~1.0.1",
-    "grunt-usemin": "~2.4.0",
     "grunt-mocha": "~0.4.0",
-    "grunt-newer": "~0.7.0",
-    "grunt-svgmin": "~0.4.0",
-    "grunt-concurrent": "~0.5.0",
-    "load-grunt-tasks": "~0.6.0",
-    "time-grunt": "~1.0.0",
-    "jshint-stylish": "~0.4.0"
+    "grunt-newer": "^0.8.0",
+    "grunt-rev": "~0.1.0",
+    "grunt-svgmin": "^2.0.0",
+    "grunt-usemin": "^3.0.0",
+    "jshint-stylish": "^1.0.0",
+    "load-grunt-tasks": "^2.0.0",
+    "time-grunt": "~1.0.0"
   },
   "engines": {
     "node": ">=0.8.0"