Update dependencies

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

package.json

@@ -22,11 +22,11 @@
     "test": "grunt"
   },
   "dependencies": {
-    "grunt": "~0.4.2",
-    "grunt-md2html": "~0.2.1",
-    "grunt-contrib-connect": "~0.8.0",
-    "grunt-contrib-cssmin": "~0.10.0",
-    "grunt-contrib-uglify": "~0.6.0"
+    "grunt": "^1.4.0",
+    "grunt-contrib-connect": "^3.0.0",
+    "grunt-contrib-cssmin": "^4.0.0",
+    "grunt-contrib-uglify": "^5.0.1",
+    "grunt-md2html": "^0.5.1"
   },
   "engines": {
     "node": ">=0.8.0"