add repository field to readme

Author: ForbesLindesay

package.json

@@ -2,12 +2,20 @@
   "name": "css-parse",
   "version": "1.5.2",
   "description": "CSS parser",
-  "keywords": ["css", "parser", "stylesheet"],
+  "keywords": [
+    "css",
+    "parser",
+    "stylesheet"
+  ],
   "author": "TJ Holowaychuk <tj@vision-media.ca>",
   "license": "MIT",
   "devDependencies": {
     "mocha": "*",
     "should": "*"
   },
-  "main": "index"
+  "main": "index",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/visionmedia/css-parse.git"
+  }
 }