Implement namespaces and simple binary support.

[as-roman-o]

Implement namespaces https://socket.io/docs/rooms-and-namespaces/

client = SocketIO::Client::Simple.connect url, path: '/custom_namespace'

and simple binary support. If you want to send binary data, you should put this packet (byte array) to SocketIO::Client::Simple::ByteBuffer class via SocketIO::Client::Simple.as_byte_buffer method:

client.emit :binary, SocketIO::Client::Simple.as_byte_buffer(byte_array)

@shokai Could you please provide review?

[RomanKisilenko]

@shokai Hi, not sure if you have time to take care to review this PR and make a release. We are developing a product which relies on your gem but requires support for extra features added in this PR. We appreciate if you can merge and release this PR soon.
Let me know if you think it is better for us to fork your gem instead.

[RomanKisilenko]

We have published the updated version here for now: https://rubygems.org/gems/statscloud.io-ruby-socket.io-client-simple