Update repo in package.json to point to official

package.json

@@ -7,7 +7,7 @@
   "version": "3.0.0-pre1",
   "repository": {
     "type": "git",
-    "url": "http://github.com/torkelo/grafana.git"
+    "url": "http://github.com/grafana/grafana.git"
   },
   "devDependencies": {
     "angular2": "2.0.0-beta.0",