Updated 'package.json' to include the 'jshint' dependency.

Also included a fix for the test so that it works on systems which are not configured to execute node.js scripts.

Author: danielmcq

package.json

@@ -12,10 +12,13 @@
   },
   "scripts": {
     "prepublish": "jshint cookiejar.js && git tag $npm_package_version && git push origin master && git push origin --tags",
-    "test": "tests/test.js"
+    "test": "node tests/test.js"
   },
   "repository": {
     "type": "git",
     "url": "https://github.com/bmeck/node-cookiejar.git"
+  },
+  "dependencies": {
+    "jshint": "^2.8.0"
   }
 }