Problem when using (/:optional) as route param in conjonction with Backbone query parameters.

[strangerqc]

When including the Backbone.queryparams plugin, the routes defined using optional segment stoped being triggered, here's a route example: "myroute(/:optional)"

Removing the pluging re enable this backbone router feature.

[jhudson8]

Please add a PR with unit test for this issue (even if the test is failing)

https://github.com/jhudson8/backbone-query-parameters/blob/master/test/backbone.query.params-test.js