cboden/Ratchet — pull request #138 by bramus (2013-10-31 22:59:14+00:00)
Title: Allow WampServer implementations to define their own subprotocols

The OCPP-J protocol for example uses its own custom subprotocols: `ocpp1.2` and `ocpp1.5` (see [OCPP Specification, Section 2.6.2](http://www.gir.fr/ocppjs/ocpp_srpc_spec.shtml)). If one doesn't define this subprotocol, the client won't connect to the server.

The two commits attached enable this.

Example implementation:

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