update to fix compile error with depricated old function

[2sweetheart2]

Old call function beginSSL:

void SocketIoClient::beginSSL(const char* host, const int port, const char* url, const char* fingerprint) {
	_webSocket.beginSSL(host, port, url, fingerprint);
    initialize();
}

But function beginSSL in WebSocketsClient.h:

void beginSSL(const char * host, uint16_t port, const char * url = "/", const uint8_t * fingerprint = NULL, const char * protocol = "arduino");