better expect() failure messages

[EpiphanyMachine]

it currently uses console logs and the karma output is not useful

LOG: 'Expected', 'email', 'to equal', '[email protected]', 'in', Object{first_name: 'Joey', last_name: 'Cash', email: '[email protected]', phone_number: '4151234567'}, 'but it was', '[email protected]'
PhantomJS 1.9.8 (Mac OS X) Profile spec should update the user information FAILED
    Error: Expected PATCH /api/user with different data
    EXPECTED: function (postData) {
          var jsonData = JSON.parse(postData);
          if (!jsonData) {
            console.log("Unable to parse to JSON:", postData);
            return false;
          }
          return _.all(expectedParams, function (expectedValue, expectedKey) {
            return findParam(jsonData, expectedValue, expectedKey);
          });
        }
    GOT:      {"user":{"first_name":"Joey","last_name":"Cash","email":"[email protected]","phone_number":"4151234567"}}
        at $httpBackend (/Users/owner/hint/provider-portal/bower_components/angular-mocks/angular-mocks.js:1148)
        at sendReq (/Users/owner/hint/provider-portal/public/vendor/js/all.js:26405)
        at /Users/owner/hint/provider-portal/public/vendor/js/all.js:26145