OK, sounds good, will merge.

Also, FWIW, I've added support for parallel pages on the develop branch. It also constructs phantomjs pages at the same time that it makes a request for a new work item to reduce some of the latency. However, the workers lock out in my test application due to a bug. I'm not sure why, and haven't had time to take a closer look yet.

Bulk of those features are in these commits:
* https://github.com/dailymuse/phantom-cluster/commit/57e206aa8fa42b9423fabb6039734cadc27db6ef
* https://github.com/dailymuse/phantom-cluster/commit/cdd4d1d480ab9dc0366f2cf5745809091c559193