Update websocket-stream for ws 1.x

[progre]

This is PR to fix Kurento/bugtracker#116 .
It makes to use ws 1.x in websocket-stream.

To use in Kurento-client-js, It should be merged at the same time;
Kurento/kurento-jsonrpc-js#1

[ggn06awu]

+1, the library needs updating to prevent the following:

default: srcBuffer.copy(dstBuffer, dstOffset, 0, length); break;
                  ^

RangeError: out of range index

Please accept!