fix(karma): fix running karma via gulp

As described below, the karma server showdown process can crash, if the done() function, provided
by gulp is referenced directly instead of wrapped in a closure function
http://stackoverflow.com/questions/26614738/issue-running-karma-task-from-gulp

Reformat the gulpfile.js

Squashing the two commits

gulpfile.js

@@ -826,7 +826,7 @@ gulp.task('test.unit.js/ci', function(done) {
                  reporters: ['dots'],
                  browsers: browserConf.browsersToRun
                },
-               done)
+               function(err) { done(); })
       .start();
 });