update some dependencies

Author: lukeapage

package.json

@@ -41,8 +41,8 @@
   },
   "optionalDependencies": {
     "graceful-fs": "~2.0.3",
-    "mime": "1.2.x",
-    "request": ">=2.33.0",
+    "mime": "~1.2.11",
+    "request": "~2.34.0",
     "mkdirp": "~0.3.5",
     "clean-css": "2.1.x",
     "source-map": "0.1.x"
@@ -51,15 +51,15 @@
     "diff": "~1.0",
     "grunt": "~0.4.2",
     "grunt-contrib-clean": "~0.5.0",
-    "grunt-contrib-concat": "~0.3.0",
-    "grunt-contrib-connect": "~0.6.0",
+    "grunt-contrib-concat": "~0.4.0",
+    "grunt-contrib-connect": "~0.7.0",
     "grunt-contrib-jasmine": "~0.5.2",
-    "grunt-contrib-jshint": "~0.8.0",
-    "grunt-contrib-uglify": "~0.3.2",
-    "grunt-shell": "~0.6.4",
+    "grunt-contrib-jshint": "~0.10.0",
+    "grunt-contrib-uglify": "~0.4.0",
+    "grunt-shell": "~0.7.0",
     "http-server": "~0.6.1",
     "matchdep": "~0.3.0",
-    "time-grunt": "~0.2.9"
+    "time-grunt": "~0.3.1"
  },
   "keywords": [
     "compile less",