Creating the route for updating keywords

We also need to be able to save changes to an existing keyword entry. This is another POST request, this time at /api/keywords/:i/*. Here is the spec for this:

it('should update a keyword when receiving a POST request at \ /api/keywords/:id/', function (done) {
  var expected = {
    "_items": [
    {'id': 1, 'value': 'Onion', 'categoryID': 2} ] };
    var body = {
      'id': 1,
      'value': 'Onion',
      'categoryID': 2
    };

    async.series(
      [

         function(callback) {
           dbSession.insert(
             'category',
             {'name': 'Vegetable'},
             function(err) { callback(err) });
         },

         function(callback) {
           dbSession.insert(
             'category',
             {&apos...