Updated package.json to match master

package.json

@@ -2,26 +2,40 @@
   "name": "picturefill",
   "description": "A responsive image polyfill.",
   "version": "3.0.0",
-  "repository": "https://github.com/scottjehl/picturefill.git",
+  "homepage": "https://scottjehl.github.io/picturefill/",
+  "bugs": "https://github.com/scottjehl/picturefill/issues",
+  "license": "MIT",
+  "author": "Scott Jehl <scottjehl@gmail.com>",
+  "repository": {
+    "type": "git",
+    "url": "git@github.com:scottjehl/picturefill.git"
+  },
+  "keywords": [
+    "picturefill",
+    "srcset",
+    "picture",
+    "responsive",
+    "responsive images"
+  ],
   "engines": {
-    "node": ">= 0.10.0"
+    "node": ">= 0.8.0"
   },
   "main": "./dist/picturefill",
   "scripts": {
     "test": "grunt test --verbose"
   },
   "devDependencies": {
-    "grunt": "~0.4.5",
-    "grunt-bytesize": "^0.1.1",
+    "grunt": "~0.4.2",
     "grunt-cli": "~0.1",
-    "grunt-contrib-clean": "~0.6.0",
-    "grunt-contrib-concat": "^0.5.0",
-    "grunt-contrib-copy": "^0.7.0",
+    "grunt-contrib-clean": "~0.4.0",
+    "grunt-contrib-concat": "~0.3.0",
     "grunt-contrib-jshint": "~0.10.0",
-    "grunt-contrib-qunit": "~0.5.2",
-    "grunt-contrib-uglify": "~0.7.0",
-    "grunt-contrib-watch": "~0.6.1",
-    "grunt-jscs": "~1.2.0",
-    "grunt-max-filesize": "^0.1.0"
+    "grunt-contrib-qunit": "~0.2.0",
+    "grunt-contrib-uglify": "~0.2.0",
+    "grunt-contrib-watch": "~0.6.0",
+    "grunt-gh-pages": "^0.10.0",
+    "grunt-insert": "~0.1.0",
+    "grunt-jscs-checker": "~0.4.3",
+    "grunt-release": "^0.12.0"
   }
 }