Add maxListeners 0 to EventEmmiter2 instantiation to avoid annoying logg...

...ing

We used grunt-lib-phantomjs upstream with more than 10 listeners due to a huge number of Jasmine tests (split up by listener). We have been patching grunt-lib-phantomjs with this change locally but would like to use master. The default max listeners is 10 in EventEmitter2. If this pull is not acceptable, would a pull with a way of passing a configuration option in to pass down to EventEmitter2 be acceptable?