Update repo URL.

package.json

@@ -3,6 +3,10 @@
 , "description" : "libnotify C++ bindings for Node"
 , "author": "Bodil Stokke <bodil@bodil.tv>"
 , "keywords": [ "libnotify" ]
+, "repository":
+  { "type": "git"
+  , "url": "http://github.com/bodil/node-gnomenotify.git"
+  }
 , "main": "./build/default/libnotify"
 , "scripts": { "install": "node-waf configure build" }
 }