README.md WebSocket API needs update

[plexorama]

in the WebSocket API section of the README.md, there is the following statement:

block: new block received from network. This event is published in the inv room. Data will be a app/models/Block object. Sample output:

{
  "hash":"000000004a3d187c430cd6a5e988aca3b19e1f1d1727a50dead6c8ac26899b96",
  "time":1389789343,
  ...
}

But the the data/block info received is not a JSON object as stated in the README.md, but a plan string. Here is what I got from io.socket Java debugging output:

socket received: type 'message', data '2["block","000000000000000000075609555b5e588082f37aca1cb0d2cf5419a4c033cd28"]'

In fact, only the block id is passed to the listener as a string:

"000000000000000000075609555b5e588082f37aca1cb0d2cf5419a4c033cd28"

Would you mind updating the README.md to reflect the actual API output?

I've tested this on test-insight.bitpay.com and insight.bitpay.com. Both with same results.

Thanks.